// WARNING: This file is machine generated by fidlgen.

#pragma once

#include <fidl/test.protocollayouts/cpp/common_types.h>
#include <fidl/test.protocollayouts/cpp/markers.h>
#include <lib/fidl/cpp/natural_coding_traits.h>
#include <lib/fidl/cpp/natural_types.h>

#include <cinttypes>
#include <string>

#ifdef __Fuchsia__

#include <lib/zx/channel.h>

#endif  // __Fuchsia__

#include <fidl/test.protocollayouts.imported/cpp/natural_types.h>
namespace test_protocollayouts {

class MainProtocolTwoWayImportWithErrorTopResponse;

class MainProtocolTwoWayAnonWithErrorTopResponse;

class MainProtocolOnImportWithErrorRequest;

class MainProtocolOnAnonWithErrorRequest;

class MainProtocolTwoWayLocalWithErrorTopResponse;

class MainProtocolOnLocalWithErrorRequest;

class MainProtocolOnAnonWithErrorResponse;

class MainProtocolTwoWayAnonWithErrorRequest;

class MainProtocolTwoWayAnonResponse;

class MainProtocolOneWayAnonRequest;

class LocalTablePayload;

class MainProtocolTwoWayImportWithErrorResult;

class MainProtocolTwoWayAnonWithErrorResponse;

class MainProtocolTwoWayAnonWithErrorResult;

class MainProtocolOnImportWithErrorResult;

class MainProtocolOnAnonWithErrorResult;

class MainProtocolTwoWayAnonRequest;

class MainProtocolOnAnonRequest;

class LocalUnionPayload;

class MainProtocolTwoWayLocalWithErrorResult;

class MainProtocolOnLocalWithErrorResult;

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_TwoWayImportWithError_ResultTable;

class MainProtocolTwoWayImportWithErrorResult {
 private:
  using Storage_ =
      std::variant<
          std::monostate, ::test_protocollayouts_imported::ImportUnionPayload, uint32_t>;

 public:
  // TODO: share union tag types between wire & natural.
  enum class Tag : fidl_union_tag_t {
    kResponse = 1,  // 0x1
    kErr = 2,       // 0x2
  };

  MainProtocolTwoWayImportWithErrorResult(MainProtocolTwoWayImportWithErrorResult&& other) noexcept
      : MainProtocolTwoWayImportWithErrorResult(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{}) {
    *storage_ = std::move(*other.storage_);
  }
  MainProtocolTwoWayImportWithErrorResult& operator=(MainProtocolTwoWayImportWithErrorResult&& other) noexcept {
    if (this != &other) {
      *storage_ = std::move(*other.storage_);
    }
    return *this;
  }
  MainProtocolTwoWayImportWithErrorResult(const MainProtocolTwoWayImportWithErrorResult& other) noexcept : MainProtocolTwoWayImportWithErrorResult(other.CloneStorage_()) {}
  MainProtocolTwoWayImportWithErrorResult& operator=(const MainProtocolTwoWayImportWithErrorResult& other) noexcept {
    if (this != &other) {
      storage_ = other.CloneStorage_();
    }
    return *this;
  }

  bool operator==(const MainProtocolTwoWayImportWithErrorResult& other) const noexcept {
    return *storage_ == *other.storage_;
  }
  bool operator!=(const MainProtocolTwoWayImportWithErrorResult& other) const noexcept {
    return *storage_ != *other.storage_;
  }

  constexpr ::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult::Tag Which() const {
    return MainProtocolTwoWayImportWithErrorResult::IndexToTag(storage_->index()).value();
  }
  static MainProtocolTwoWayImportWithErrorResult WithResponse(::test_protocollayouts_imported::ImportUnionPayload val) {
    return MainProtocolTwoWayImportWithErrorResult(std::make_shared<Storage_>(
        std::in_place_index_t<1>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<1, Storage_> response() const {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<1, Storage_> response() {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  static MainProtocolTwoWayImportWithErrorResult WithErr(uint32_t val) {
    return MainProtocolTwoWayImportWithErrorResult(std::make_shared<Storage_>(
        std::in_place_index_t<2>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<2, Storage_> err() const {
    return ::fidl::internal::UnionMemberView<2, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<2, Storage_> err() {
    return ::fidl::internal::UnionMemberView<2, Storage_>(storage_);
  }

  MainProtocolTwoWayImportWithErrorResult(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : storage_(std::make_shared<Storage_>()) {}

 private:
  std::shared_ptr<Storage_> storage_;
  std::shared_ptr<Storage_> CloneStorage_() const;
  friend struct ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult>;
  static constexpr auto kMembers = std::make_tuple(
      ::fidl::internal::NaturalUnionMember<::fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>());

  explicit MainProtocolTwoWayImportWithErrorResult(std::shared_ptr<Storage_> storage) : storage_(std::move(storage)) {}

  static constexpr size_t TagToIndex(::fidl::internal::NaturalDecoder* decoder, ::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult::Tag tag) {
    switch (tag) {
      case ::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult::Tag::kResponse:
        return 1;
      case ::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult::Tag::kErr:
        return 2;
      default: {
        decoder->SetError(::fidl::internal::kCodingErrorUnknownUnionTag);
        return 0;
      }
    }
  }

  static constexpr std::optional<::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult::Tag> IndexToTag(size_t index) {
    switch (index) {
      case 1:
        return ::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult::Tag::kResponse;
      case 2:
        return ::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult::Tag::kErr;
      default:
        return std::nullopt;
    }
  }
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolTwoWayImportWithErrorTopResponseTable;

class MainProtocolTwoWayImportWithErrorTopResponse {
 private:
  struct Storage_;

 public:
  MainProtocolTwoWayImportWithErrorTopResponse(Storage_ storage) noexcept : storage_(std::move(storage)) {}
  MainProtocolTwoWayImportWithErrorTopResponse(::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult result) noexcept
      : storage_({.result = std::move(result)}) {}

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdefaulted-function-deleted"
  // Default constructs a |MainProtocolTwoWayImportWithErrorTopResponse| only if all of its members are default constructible.
  MainProtocolTwoWayImportWithErrorTopResponse() = default;
#pragma clang diagnostic pop

  MainProtocolTwoWayImportWithErrorTopResponse(MainProtocolTwoWayImportWithErrorTopResponse&&) noexcept = default;
  MainProtocolTwoWayImportWithErrorTopResponse& operator=(MainProtocolTwoWayImportWithErrorTopResponse&&) noexcept = default;
  MainProtocolTwoWayImportWithErrorTopResponse(const MainProtocolTwoWayImportWithErrorTopResponse& other) noexcept : MainProtocolTwoWayImportWithErrorTopResponse(other.CloneStorage_()) {}
  MainProtocolTwoWayImportWithErrorTopResponse& operator=(const MainProtocolTwoWayImportWithErrorTopResponse& other) noexcept {
    storage_ = other.CloneStorage_();
    return *this;
  }

  bool operator==(const MainProtocolTwoWayImportWithErrorTopResponse& other) const noexcept {
    return ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolTwoWayImportWithErrorTopResponse, 16>::Equal(this, &other);
  }
  bool operator!=(const MainProtocolTwoWayImportWithErrorTopResponse& other) const noexcept {
    return !::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolTwoWayImportWithErrorTopResponse, 16>::Equal(this, &other);
  }

  const ::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult&
  result() const {
    return storage_.result;
  }

  ::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult& result() {
    return storage_.result;
  }

  MainProtocolTwoWayImportWithErrorTopResponse(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : MainProtocolTwoWayImportWithErrorTopResponse(Storage_{
                                                                                                                 .result = ::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{},
                                                                                                             }) {}

 private:
  struct Storage_ final {
    ::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult result;
  };

  Storage_ storage_;
  Storage_ CloneStorage_() const;

  friend struct ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolTwoWayImportWithErrorTopResponse, 16>;
  friend struct ::fidl::internal::MemberVisitor<::test_protocollayouts::MainProtocolTwoWayImportWithErrorTopResponse>;
  static constexpr auto kMembers = std::make_tuple(::fidl::internal::NaturalStructMember<Storage_, ::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult, fidl::internal::NaturalCodingConstraintEmpty>{
      &Storage_::result, 0});
  static constexpr auto kPadding = std::make_tuple();
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_TwoWayAnonWithError_ResponseTable;

class MainProtocolTwoWayAnonWithErrorResponse {
 private:
  using Storage_ =
      std::variant<
          std::monostate, bool>;

 public:
  // TODO: share union tag types between wire & natural.
  enum class Tag : fidl_union_tag_t {
    kB = 1,  // 0x1
    kUnknown = ::std::numeric_limits<::fidl_union_tag_t>::max(),
  };
  // Create an unknown value of this union.
  MainProtocolTwoWayAnonWithErrorResponse() : storage_(std::make_shared<Storage_>()) {}

  MainProtocolTwoWayAnonWithErrorResponse(MainProtocolTwoWayAnonWithErrorResponse&& other) noexcept
      : MainProtocolTwoWayAnonWithErrorResponse(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{}) {
    *storage_ = std::move(*other.storage_);
  }
  MainProtocolTwoWayAnonWithErrorResponse& operator=(MainProtocolTwoWayAnonWithErrorResponse&& other) noexcept {
    if (this != &other) {
      *storage_ = std::move(*other.storage_);
    }
    return *this;
  }
  MainProtocolTwoWayAnonWithErrorResponse(const MainProtocolTwoWayAnonWithErrorResponse& other) noexcept : MainProtocolTwoWayAnonWithErrorResponse(other.CloneStorage_()) {}
  MainProtocolTwoWayAnonWithErrorResponse& operator=(const MainProtocolTwoWayAnonWithErrorResponse& other) noexcept {
    if (this != &other) {
      storage_ = other.CloneStorage_();
    }
    return *this;
  }

  bool operator==(const MainProtocolTwoWayAnonWithErrorResponse& other) const noexcept {
    return *storage_ == *other.storage_;
  }
  bool operator!=(const MainProtocolTwoWayAnonWithErrorResponse& other) const noexcept {
    return *storage_ != *other.storage_;
  }

  constexpr ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResponse::Tag Which() const {
    return MainProtocolTwoWayAnonWithErrorResponse::IndexToTag(storage_->index()).value();
  }
  static MainProtocolTwoWayAnonWithErrorResponse WithB(bool val) {
    return MainProtocolTwoWayAnonWithErrorResponse(std::make_shared<Storage_>(
        std::in_place_index_t<1>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<1, Storage_> b() const {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<1, Storage_> b() {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }

  MainProtocolTwoWayAnonWithErrorResponse(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : storage_(std::make_shared<Storage_>()) {}

 private:
  std::shared_ptr<Storage_> storage_;
  std::shared_ptr<Storage_> CloneStorage_() const;
  friend struct ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResponse>;
  static constexpr auto kMembers = std::make_tuple(
      ::fidl::internal::NaturalUnionMember<::fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>());

  explicit MainProtocolTwoWayAnonWithErrorResponse(std::shared_ptr<Storage_> storage) : storage_(std::move(storage)) {}

  static constexpr size_t TagToIndex(::fidl::internal::NaturalDecoder* decoder, ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResponse::Tag tag) {
    switch (tag) {
      case ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResponse::Tag::kB:
        return 1;
      case ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResponse::Tag::kUnknown:
        return 0;
      default: {
        decoder->SetError(::fidl::internal::kCodingErrorUnknownUnionTag);
        return 0;
      }
    }
  }

  static constexpr std::optional<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResponse::Tag> IndexToTag(size_t index) {
    switch (index) {
      case 1:
        return ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResponse::Tag::kB;
      default:
        return ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResponse::Tag::kUnknown;
    }
  }
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_TwoWayAnonWithError_ResultTable;

class MainProtocolTwoWayAnonWithErrorResult {
 private:
  using Storage_ =
      std::variant<
          std::monostate, ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResponse, uint32_t>;

 public:
  // TODO: share union tag types between wire & natural.
  enum class Tag : fidl_union_tag_t {
    kResponse = 1,  // 0x1
    kErr = 2,       // 0x2
  };

  MainProtocolTwoWayAnonWithErrorResult(MainProtocolTwoWayAnonWithErrorResult&& other) noexcept
      : MainProtocolTwoWayAnonWithErrorResult(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{}) {
    *storage_ = std::move(*other.storage_);
  }
  MainProtocolTwoWayAnonWithErrorResult& operator=(MainProtocolTwoWayAnonWithErrorResult&& other) noexcept {
    if (this != &other) {
      *storage_ = std::move(*other.storage_);
    }
    return *this;
  }
  MainProtocolTwoWayAnonWithErrorResult(const MainProtocolTwoWayAnonWithErrorResult& other) noexcept : MainProtocolTwoWayAnonWithErrorResult(other.CloneStorage_()) {}
  MainProtocolTwoWayAnonWithErrorResult& operator=(const MainProtocolTwoWayAnonWithErrorResult& other) noexcept {
    if (this != &other) {
      storage_ = other.CloneStorage_();
    }
    return *this;
  }

  bool operator==(const MainProtocolTwoWayAnonWithErrorResult& other) const noexcept {
    return *storage_ == *other.storage_;
  }
  bool operator!=(const MainProtocolTwoWayAnonWithErrorResult& other) const noexcept {
    return *storage_ != *other.storage_;
  }

  constexpr ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult::Tag Which() const {
    return MainProtocolTwoWayAnonWithErrorResult::IndexToTag(storage_->index()).value();
  }
  static MainProtocolTwoWayAnonWithErrorResult WithResponse(::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResponse val) {
    return MainProtocolTwoWayAnonWithErrorResult(std::make_shared<Storage_>(
        std::in_place_index_t<1>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<1, Storage_> response() const {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<1, Storage_> response() {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  static MainProtocolTwoWayAnonWithErrorResult WithErr(uint32_t val) {
    return MainProtocolTwoWayAnonWithErrorResult(std::make_shared<Storage_>(
        std::in_place_index_t<2>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<2, Storage_> err() const {
    return ::fidl::internal::UnionMemberView<2, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<2, Storage_> err() {
    return ::fidl::internal::UnionMemberView<2, Storage_>(storage_);
  }

  MainProtocolTwoWayAnonWithErrorResult(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : storage_(std::make_shared<Storage_>()) {}

 private:
  std::shared_ptr<Storage_> storage_;
  std::shared_ptr<Storage_> CloneStorage_() const;
  friend struct ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult>;
  static constexpr auto kMembers = std::make_tuple(
      ::fidl::internal::NaturalUnionMember<::fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>());

  explicit MainProtocolTwoWayAnonWithErrorResult(std::shared_ptr<Storage_> storage) : storage_(std::move(storage)) {}

  static constexpr size_t TagToIndex(::fidl::internal::NaturalDecoder* decoder, ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult::Tag tag) {
    switch (tag) {
      case ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult::Tag::kResponse:
        return 1;
      case ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult::Tag::kErr:
        return 2;
      default: {
        decoder->SetError(::fidl::internal::kCodingErrorUnknownUnionTag);
        return 0;
      }
    }
  }

  static constexpr std::optional<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult::Tag> IndexToTag(size_t index) {
    switch (index) {
      case 1:
        return ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult::Tag::kResponse;
      case 2:
        return ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult::Tag::kErr;
      default:
        return std::nullopt;
    }
  }
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolTwoWayAnonWithErrorTopResponseTable;

class MainProtocolTwoWayAnonWithErrorTopResponse {
 private:
  struct Storage_;

 public:
  MainProtocolTwoWayAnonWithErrorTopResponse(Storage_ storage) noexcept : storage_(std::move(storage)) {}
  MainProtocolTwoWayAnonWithErrorTopResponse(::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult result) noexcept
      : storage_({.result = std::move(result)}) {}

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdefaulted-function-deleted"
  // Default constructs a |MainProtocolTwoWayAnonWithErrorTopResponse| only if all of its members are default constructible.
  MainProtocolTwoWayAnonWithErrorTopResponse() = default;
#pragma clang diagnostic pop

  MainProtocolTwoWayAnonWithErrorTopResponse(MainProtocolTwoWayAnonWithErrorTopResponse&&) noexcept = default;
  MainProtocolTwoWayAnonWithErrorTopResponse& operator=(MainProtocolTwoWayAnonWithErrorTopResponse&&) noexcept = default;
  MainProtocolTwoWayAnonWithErrorTopResponse(const MainProtocolTwoWayAnonWithErrorTopResponse& other) noexcept : MainProtocolTwoWayAnonWithErrorTopResponse(other.CloneStorage_()) {}
  MainProtocolTwoWayAnonWithErrorTopResponse& operator=(const MainProtocolTwoWayAnonWithErrorTopResponse& other) noexcept {
    storage_ = other.CloneStorage_();
    return *this;
  }

  bool operator==(const MainProtocolTwoWayAnonWithErrorTopResponse& other) const noexcept {
    return ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorTopResponse, 16>::Equal(this, &other);
  }
  bool operator!=(const MainProtocolTwoWayAnonWithErrorTopResponse& other) const noexcept {
    return !::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorTopResponse, 16>::Equal(this, &other);
  }

  const ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult&
  result() const {
    return storage_.result;
  }

  ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult& result() {
    return storage_.result;
  }

  MainProtocolTwoWayAnonWithErrorTopResponse(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : MainProtocolTwoWayAnonWithErrorTopResponse(Storage_{
                                                                                                               .result = ::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{},
                                                                                                           }) {}

 private:
  struct Storage_ final {
    ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult result;
  };

  Storage_ storage_;
  Storage_ CloneStorage_() const;

  friend struct ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorTopResponse, 16>;
  friend struct ::fidl::internal::MemberVisitor<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorTopResponse>;
  static constexpr auto kMembers = std::make_tuple(::fidl::internal::NaturalStructMember<Storage_, ::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult, fidl::internal::NaturalCodingConstraintEmpty>{
      &Storage_::result, 0});
  static constexpr auto kPadding = std::make_tuple();
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_OnImportWithError_ResultTable;

class MainProtocolOnImportWithErrorResult {
 private:
  using Storage_ =
      std::variant<
          std::monostate, ::test_protocollayouts_imported::ImportTablePayload, uint32_t>;

 public:
  // TODO: share union tag types between wire & natural.
  enum class Tag : fidl_union_tag_t {
    kResponse = 1,  // 0x1
    kErr = 2,       // 0x2
  };

  MainProtocolOnImportWithErrorResult(MainProtocolOnImportWithErrorResult&& other) noexcept
      : MainProtocolOnImportWithErrorResult(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{}) {
    *storage_ = std::move(*other.storage_);
  }
  MainProtocolOnImportWithErrorResult& operator=(MainProtocolOnImportWithErrorResult&& other) noexcept {
    if (this != &other) {
      *storage_ = std::move(*other.storage_);
    }
    return *this;
  }
  MainProtocolOnImportWithErrorResult(const MainProtocolOnImportWithErrorResult& other) noexcept : MainProtocolOnImportWithErrorResult(other.CloneStorage_()) {}
  MainProtocolOnImportWithErrorResult& operator=(const MainProtocolOnImportWithErrorResult& other) noexcept {
    if (this != &other) {
      storage_ = other.CloneStorage_();
    }
    return *this;
  }

  bool operator==(const MainProtocolOnImportWithErrorResult& other) const noexcept {
    return *storage_ == *other.storage_;
  }
  bool operator!=(const MainProtocolOnImportWithErrorResult& other) const noexcept {
    return *storage_ != *other.storage_;
  }

  constexpr ::test_protocollayouts::MainProtocolOnImportWithErrorResult::Tag Which() const {
    return MainProtocolOnImportWithErrorResult::IndexToTag(storage_->index()).value();
  }
  static MainProtocolOnImportWithErrorResult WithResponse(::test_protocollayouts_imported::ImportTablePayload val) {
    return MainProtocolOnImportWithErrorResult(std::make_shared<Storage_>(
        std::in_place_index_t<1>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<1, Storage_> response() const {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<1, Storage_> response() {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  static MainProtocolOnImportWithErrorResult WithErr(uint32_t val) {
    return MainProtocolOnImportWithErrorResult(std::make_shared<Storage_>(
        std::in_place_index_t<2>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<2, Storage_> err() const {
    return ::fidl::internal::UnionMemberView<2, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<2, Storage_> err() {
    return ::fidl::internal::UnionMemberView<2, Storage_>(storage_);
  }

  MainProtocolOnImportWithErrorResult(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : storage_(std::make_shared<Storage_>()) {}

 private:
  std::shared_ptr<Storage_> storage_;
  std::shared_ptr<Storage_> CloneStorage_() const;
  friend struct ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolOnImportWithErrorResult>;
  static constexpr auto kMembers = std::make_tuple(
      ::fidl::internal::NaturalUnionMember<::fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>());

  explicit MainProtocolOnImportWithErrorResult(std::shared_ptr<Storage_> storage) : storage_(std::move(storage)) {}

  static constexpr size_t TagToIndex(::fidl::internal::NaturalDecoder* decoder, ::test_protocollayouts::MainProtocolOnImportWithErrorResult::Tag tag) {
    switch (tag) {
      case ::test_protocollayouts::MainProtocolOnImportWithErrorResult::Tag::kResponse:
        return 1;
      case ::test_protocollayouts::MainProtocolOnImportWithErrorResult::Tag::kErr:
        return 2;
      default: {
        decoder->SetError(::fidl::internal::kCodingErrorUnknownUnionTag);
        return 0;
      }
    }
  }

  static constexpr std::optional<::test_protocollayouts::MainProtocolOnImportWithErrorResult::Tag> IndexToTag(size_t index) {
    switch (index) {
      case 1:
        return ::test_protocollayouts::MainProtocolOnImportWithErrorResult::Tag::kResponse;
      case 2:
        return ::test_protocollayouts::MainProtocolOnImportWithErrorResult::Tag::kErr;
      default:
        return std::nullopt;
    }
  }
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolOnImportWithErrorRequestTable;

class MainProtocolOnImportWithErrorRequest {
 private:
  struct Storage_;

 public:
  MainProtocolOnImportWithErrorRequest(Storage_ storage) noexcept : storage_(std::move(storage)) {}
  MainProtocolOnImportWithErrorRequest(::test_protocollayouts::MainProtocolOnImportWithErrorResult result) noexcept
      : storage_({.result = std::move(result)}) {}

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdefaulted-function-deleted"
  // Default constructs a |MainProtocolOnImportWithErrorRequest| only if all of its members are default constructible.
  MainProtocolOnImportWithErrorRequest() = default;
#pragma clang diagnostic pop

  MainProtocolOnImportWithErrorRequest(MainProtocolOnImportWithErrorRequest&&) noexcept = default;
  MainProtocolOnImportWithErrorRequest& operator=(MainProtocolOnImportWithErrorRequest&&) noexcept = default;
  MainProtocolOnImportWithErrorRequest(const MainProtocolOnImportWithErrorRequest& other) noexcept : MainProtocolOnImportWithErrorRequest(other.CloneStorage_()) {}
  MainProtocolOnImportWithErrorRequest& operator=(const MainProtocolOnImportWithErrorRequest& other) noexcept {
    storage_ = other.CloneStorage_();
    return *this;
  }

  bool operator==(const MainProtocolOnImportWithErrorRequest& other) const noexcept {
    return ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolOnImportWithErrorRequest, 16>::Equal(this, &other);
  }
  bool operator!=(const MainProtocolOnImportWithErrorRequest& other) const noexcept {
    return !::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolOnImportWithErrorRequest, 16>::Equal(this, &other);
  }

  const ::test_protocollayouts::MainProtocolOnImportWithErrorResult&
  result() const {
    return storage_.result;
  }

  ::test_protocollayouts::MainProtocolOnImportWithErrorResult& result() {
    return storage_.result;
  }

  MainProtocolOnImportWithErrorRequest(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : MainProtocolOnImportWithErrorRequest(Storage_{
                                                                                                         .result = ::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{},
                                                                                                     }) {}

 private:
  struct Storage_ final {
    ::test_protocollayouts::MainProtocolOnImportWithErrorResult result;
  };

  Storage_ storage_;
  Storage_ CloneStorage_() const;

  friend struct ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolOnImportWithErrorRequest, 16>;
  friend struct ::fidl::internal::MemberVisitor<::test_protocollayouts::MainProtocolOnImportWithErrorRequest>;
  static constexpr auto kMembers = std::make_tuple(::fidl::internal::NaturalStructMember<Storage_, ::test_protocollayouts::MainProtocolOnImportWithErrorResult, fidl::internal::NaturalCodingConstraintEmpty>{
      &Storage_::result, 0});
  static constexpr auto kPadding = std::make_tuple();
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_OnAnonWithError_ResponseTable;

class MainProtocolOnAnonWithErrorResponse {
 private:
  struct Storage_;

 public:
  MainProtocolOnAnonWithErrorResponse(Storage_ storage) noexcept : storage_(std::move(storage)) {}
  MainProtocolOnAnonWithErrorResponse() noexcept = default;
  MainProtocolOnAnonWithErrorResponse(MainProtocolOnAnonWithErrorResponse&&) noexcept = default;
  MainProtocolOnAnonWithErrorResponse& operator=(MainProtocolOnAnonWithErrorResponse&&) noexcept = default;
  MainProtocolOnAnonWithErrorResponse(const MainProtocolOnAnonWithErrorResponse& other) noexcept : MainProtocolOnAnonWithErrorResponse(other.CloneStorage_()) {}
  MainProtocolOnAnonWithErrorResponse& operator=(const MainProtocolOnAnonWithErrorResponse& other) noexcept {
    storage_ = other.CloneStorage_();
    return *this;
  }
  bool operator==(const MainProtocolOnAnonWithErrorResponse& other) const noexcept {
    return ::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolOnAnonWithErrorResponse>::Equal(this, &other);
  }
  bool operator!=(const MainProtocolOnAnonWithErrorResponse& other) const noexcept {
    return !::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolOnAnonWithErrorResponse>::Equal(this, &other);
  }

  bool IsEmpty() const {
    return !(storage_.a.has_value());
  }

  const std::optional<uint16_t>& a() const { return storage_.a; }
  ::std::optional<uint16_t>& a() { return storage_.a; }

  MainProtocolOnAnonWithErrorResponse(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : MainProtocolOnAnonWithErrorResponse(Storage_{}) {}

 private:
  struct Storage_ final {
    ::std::optional<uint16_t> a{};
  };

  // TODO(https://fxbug.dev/91252): Box the storage.
  Storage_ storage_;
  Storage_ CloneStorage_() const;
  friend struct ::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolOnAnonWithErrorResponse>;
  friend struct ::fidl::internal::MemberVisitor<::test_protocollayouts::MainProtocolOnAnonWithErrorResponse>;
  static constexpr auto kMembers = std::make_tuple(::fidl::internal::NaturalTableMember<Storage_, uint16_t, fidl::internal::NaturalCodingConstraintEmpty>{
      1, &Storage_::a});
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_OnAnonWithError_ResultTable;

class MainProtocolOnAnonWithErrorResult {
 private:
  using Storage_ =
      std::variant<
          std::monostate, ::test_protocollayouts::MainProtocolOnAnonWithErrorResponse, uint32_t>;

 public:
  // TODO: share union tag types between wire & natural.
  enum class Tag : fidl_union_tag_t {
    kResponse = 1,  // 0x1
    kErr = 2,       // 0x2
  };

  MainProtocolOnAnonWithErrorResult(MainProtocolOnAnonWithErrorResult&& other) noexcept
      : MainProtocolOnAnonWithErrorResult(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{}) {
    *storage_ = std::move(*other.storage_);
  }
  MainProtocolOnAnonWithErrorResult& operator=(MainProtocolOnAnonWithErrorResult&& other) noexcept {
    if (this != &other) {
      *storage_ = std::move(*other.storage_);
    }
    return *this;
  }
  MainProtocolOnAnonWithErrorResult(const MainProtocolOnAnonWithErrorResult& other) noexcept : MainProtocolOnAnonWithErrorResult(other.CloneStorage_()) {}
  MainProtocolOnAnonWithErrorResult& operator=(const MainProtocolOnAnonWithErrorResult& other) noexcept {
    if (this != &other) {
      storage_ = other.CloneStorage_();
    }
    return *this;
  }

  bool operator==(const MainProtocolOnAnonWithErrorResult& other) const noexcept {
    return *storage_ == *other.storage_;
  }
  bool operator!=(const MainProtocolOnAnonWithErrorResult& other) const noexcept {
    return *storage_ != *other.storage_;
  }

  constexpr ::test_protocollayouts::MainProtocolOnAnonWithErrorResult::Tag Which() const {
    return MainProtocolOnAnonWithErrorResult::IndexToTag(storage_->index()).value();
  }
  static MainProtocolOnAnonWithErrorResult WithResponse(::test_protocollayouts::MainProtocolOnAnonWithErrorResponse val) {
    return MainProtocolOnAnonWithErrorResult(std::make_shared<Storage_>(
        std::in_place_index_t<1>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<1, Storage_> response() const {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<1, Storage_> response() {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  static MainProtocolOnAnonWithErrorResult WithErr(uint32_t val) {
    return MainProtocolOnAnonWithErrorResult(std::make_shared<Storage_>(
        std::in_place_index_t<2>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<2, Storage_> err() const {
    return ::fidl::internal::UnionMemberView<2, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<2, Storage_> err() {
    return ::fidl::internal::UnionMemberView<2, Storage_>(storage_);
  }

  MainProtocolOnAnonWithErrorResult(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : storage_(std::make_shared<Storage_>()) {}

 private:
  std::shared_ptr<Storage_> storage_;
  std::shared_ptr<Storage_> CloneStorage_() const;
  friend struct ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolOnAnonWithErrorResult>;
  static constexpr auto kMembers = std::make_tuple(
      ::fidl::internal::NaturalUnionMember<::fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>());

  explicit MainProtocolOnAnonWithErrorResult(std::shared_ptr<Storage_> storage) : storage_(std::move(storage)) {}

  static constexpr size_t TagToIndex(::fidl::internal::NaturalDecoder* decoder, ::test_protocollayouts::MainProtocolOnAnonWithErrorResult::Tag tag) {
    switch (tag) {
      case ::test_protocollayouts::MainProtocolOnAnonWithErrorResult::Tag::kResponse:
        return 1;
      case ::test_protocollayouts::MainProtocolOnAnonWithErrorResult::Tag::kErr:
        return 2;
      default: {
        decoder->SetError(::fidl::internal::kCodingErrorUnknownUnionTag);
        return 0;
      }
    }
  }

  static constexpr std::optional<::test_protocollayouts::MainProtocolOnAnonWithErrorResult::Tag> IndexToTag(size_t index) {
    switch (index) {
      case 1:
        return ::test_protocollayouts::MainProtocolOnAnonWithErrorResult::Tag::kResponse;
      case 2:
        return ::test_protocollayouts::MainProtocolOnAnonWithErrorResult::Tag::kErr;
      default:
        return std::nullopt;
    }
  }
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolOnAnonWithErrorRequestTable;

class MainProtocolOnAnonWithErrorRequest {
 private:
  struct Storage_;

 public:
  MainProtocolOnAnonWithErrorRequest(Storage_ storage) noexcept : storage_(std::move(storage)) {}
  MainProtocolOnAnonWithErrorRequest(::test_protocollayouts::MainProtocolOnAnonWithErrorResult result) noexcept
      : storage_({.result = std::move(result)}) {}

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdefaulted-function-deleted"
  // Default constructs a |MainProtocolOnAnonWithErrorRequest| only if all of its members are default constructible.
  MainProtocolOnAnonWithErrorRequest() = default;
#pragma clang diagnostic pop

  MainProtocolOnAnonWithErrorRequest(MainProtocolOnAnonWithErrorRequest&&) noexcept = default;
  MainProtocolOnAnonWithErrorRequest& operator=(MainProtocolOnAnonWithErrorRequest&&) noexcept = default;
  MainProtocolOnAnonWithErrorRequest(const MainProtocolOnAnonWithErrorRequest& other) noexcept : MainProtocolOnAnonWithErrorRequest(other.CloneStorage_()) {}
  MainProtocolOnAnonWithErrorRequest& operator=(const MainProtocolOnAnonWithErrorRequest& other) noexcept {
    storage_ = other.CloneStorage_();
    return *this;
  }

  bool operator==(const MainProtocolOnAnonWithErrorRequest& other) const noexcept {
    return ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolOnAnonWithErrorRequest, 16>::Equal(this, &other);
  }
  bool operator!=(const MainProtocolOnAnonWithErrorRequest& other) const noexcept {
    return !::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolOnAnonWithErrorRequest, 16>::Equal(this, &other);
  }

  const ::test_protocollayouts::MainProtocolOnAnonWithErrorResult&
  result() const {
    return storage_.result;
  }

  ::test_protocollayouts::MainProtocolOnAnonWithErrorResult& result() {
    return storage_.result;
  }

  MainProtocolOnAnonWithErrorRequest(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : MainProtocolOnAnonWithErrorRequest(Storage_{
                                                                                                       .result = ::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{},
                                                                                                   }) {}

 private:
  struct Storage_ final {
    ::test_protocollayouts::MainProtocolOnAnonWithErrorResult result;
  };

  Storage_ storage_;
  Storage_ CloneStorage_() const;

  friend struct ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolOnAnonWithErrorRequest, 16>;
  friend struct ::fidl::internal::MemberVisitor<::test_protocollayouts::MainProtocolOnAnonWithErrorRequest>;
  static constexpr auto kMembers = std::make_tuple(::fidl::internal::NaturalStructMember<Storage_, ::test_protocollayouts::MainProtocolOnAnonWithErrorResult, fidl::internal::NaturalCodingConstraintEmpty>{
      &Storage_::result, 0});
  static constexpr auto kPadding = std::make_tuple();
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolTwoWayAnonWithErrorRequestTable;

class MainProtocolTwoWayAnonWithErrorRequest {
 private:
  struct Storage_;

 public:
  MainProtocolTwoWayAnonWithErrorRequest(Storage_ storage) noexcept : storage_(std::move(storage)) {}
  MainProtocolTwoWayAnonWithErrorRequest() noexcept = default;
  MainProtocolTwoWayAnonWithErrorRequest(MainProtocolTwoWayAnonWithErrorRequest&&) noexcept = default;
  MainProtocolTwoWayAnonWithErrorRequest& operator=(MainProtocolTwoWayAnonWithErrorRequest&&) noexcept = default;
  MainProtocolTwoWayAnonWithErrorRequest(const MainProtocolTwoWayAnonWithErrorRequest& other) noexcept : MainProtocolTwoWayAnonWithErrorRequest(other.CloneStorage_()) {}
  MainProtocolTwoWayAnonWithErrorRequest& operator=(const MainProtocolTwoWayAnonWithErrorRequest& other) noexcept {
    storage_ = other.CloneStorage_();
    return *this;
  }
  bool operator==(const MainProtocolTwoWayAnonWithErrorRequest& other) const noexcept {
    return ::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorRequest>::Equal(this, &other);
  }
  bool operator!=(const MainProtocolTwoWayAnonWithErrorRequest& other) const noexcept {
    return !::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorRequest>::Equal(this, &other);
  }

  bool IsEmpty() const {
    return !(storage_.a.has_value());
  }

  const std::optional<uint16_t>& a() const { return storage_.a; }
  ::std::optional<uint16_t>& a() { return storage_.a; }

  MainProtocolTwoWayAnonWithErrorRequest(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : MainProtocolTwoWayAnonWithErrorRequest(Storage_{}) {}

 private:
  struct Storage_ final {
    ::std::optional<uint16_t> a{};
  };

  // TODO(https://fxbug.dev/91252): Box the storage.
  Storage_ storage_;
  Storage_ CloneStorage_() const;
  friend struct ::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorRequest>;
  friend struct ::fidl::internal::MemberVisitor<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorRequest>;
  static constexpr auto kMembers = std::make_tuple(::fidl::internal::NaturalTableMember<Storage_, uint16_t, fidl::internal::NaturalCodingConstraintEmpty>{
      1, &Storage_::a});
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolTwoWayAnonResponseTable;

class MainProtocolTwoWayAnonResponse {
 private:
  struct Storage_;

 public:
  MainProtocolTwoWayAnonResponse(Storage_ storage) noexcept : storage_(std::move(storage)) {}
  MainProtocolTwoWayAnonResponse() noexcept = default;
  MainProtocolTwoWayAnonResponse(MainProtocolTwoWayAnonResponse&&) noexcept = default;
  MainProtocolTwoWayAnonResponse& operator=(MainProtocolTwoWayAnonResponse&&) noexcept = default;
  MainProtocolTwoWayAnonResponse(const MainProtocolTwoWayAnonResponse& other) noexcept : MainProtocolTwoWayAnonResponse(other.CloneStorage_()) {}
  MainProtocolTwoWayAnonResponse& operator=(const MainProtocolTwoWayAnonResponse& other) noexcept {
    storage_ = other.CloneStorage_();
    return *this;
  }
  bool operator==(const MainProtocolTwoWayAnonResponse& other) const noexcept {
    return ::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonResponse>::Equal(this, &other);
  }
  bool operator!=(const MainProtocolTwoWayAnonResponse& other) const noexcept {
    return !::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonResponse>::Equal(this, &other);
  }

  bool IsEmpty() const {
    return !(storage_.a.has_value());
  }

  const std::optional<uint16_t>& a() const { return storage_.a; }
  ::std::optional<uint16_t>& a() { return storage_.a; }

  MainProtocolTwoWayAnonResponse(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : MainProtocolTwoWayAnonResponse(Storage_{}) {}

 private:
  struct Storage_ final {
    ::std::optional<uint16_t> a{};
  };

  // TODO(https://fxbug.dev/91252): Box the storage.
  Storage_ storage_;
  Storage_ CloneStorage_() const;
  friend struct ::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonResponse>;
  friend struct ::fidl::internal::MemberVisitor<::test_protocollayouts::MainProtocolTwoWayAnonResponse>;
  static constexpr auto kMembers = std::make_tuple(::fidl::internal::NaturalTableMember<Storage_, uint16_t, fidl::internal::NaturalCodingConstraintEmpty>{
      1, &Storage_::a});
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolTwoWayAnonRequestTable;

class MainProtocolTwoWayAnonRequest {
 private:
  using Storage_ =
      std::variant<
          std::monostate, bool>;

 public:
  // TODO: share union tag types between wire & natural.
  enum class Tag : fidl_union_tag_t {
    kB = 1,  // 0x1
    kUnknown = ::std::numeric_limits<::fidl_union_tag_t>::max(),
  };
  // Create an unknown value of this union.
  MainProtocolTwoWayAnonRequest() : storage_(std::make_shared<Storage_>()) {}

  MainProtocolTwoWayAnonRequest(MainProtocolTwoWayAnonRequest&& other) noexcept
      : MainProtocolTwoWayAnonRequest(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{}) {
    *storage_ = std::move(*other.storage_);
  }
  MainProtocolTwoWayAnonRequest& operator=(MainProtocolTwoWayAnonRequest&& other) noexcept {
    if (this != &other) {
      *storage_ = std::move(*other.storage_);
    }
    return *this;
  }
  MainProtocolTwoWayAnonRequest(const MainProtocolTwoWayAnonRequest& other) noexcept : MainProtocolTwoWayAnonRequest(other.CloneStorage_()) {}
  MainProtocolTwoWayAnonRequest& operator=(const MainProtocolTwoWayAnonRequest& other) noexcept {
    if (this != &other) {
      storage_ = other.CloneStorage_();
    }
    return *this;
  }

  bool operator==(const MainProtocolTwoWayAnonRequest& other) const noexcept {
    return *storage_ == *other.storage_;
  }
  bool operator!=(const MainProtocolTwoWayAnonRequest& other) const noexcept {
    return *storage_ != *other.storage_;
  }

  constexpr ::test_protocollayouts::MainProtocolTwoWayAnonRequest::Tag Which() const {
    return MainProtocolTwoWayAnonRequest::IndexToTag(storage_->index()).value();
  }
  static MainProtocolTwoWayAnonRequest WithB(bool val) {
    return MainProtocolTwoWayAnonRequest(std::make_shared<Storage_>(
        std::in_place_index_t<1>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<1, Storage_> b() const {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<1, Storage_> b() {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }

  MainProtocolTwoWayAnonRequest(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : storage_(std::make_shared<Storage_>()) {}

 private:
  std::shared_ptr<Storage_> storage_;
  std::shared_ptr<Storage_> CloneStorage_() const;
  friend struct ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonRequest>;
  static constexpr auto kMembers = std::make_tuple(
      ::fidl::internal::NaturalUnionMember<::fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>());

  explicit MainProtocolTwoWayAnonRequest(std::shared_ptr<Storage_> storage) : storage_(std::move(storage)) {}

  static constexpr size_t TagToIndex(::fidl::internal::NaturalDecoder* decoder, ::test_protocollayouts::MainProtocolTwoWayAnonRequest::Tag tag) {
    switch (tag) {
      case ::test_protocollayouts::MainProtocolTwoWayAnonRequest::Tag::kB:
        return 1;
      case ::test_protocollayouts::MainProtocolTwoWayAnonRequest::Tag::kUnknown:
        return 0;
      default: {
        decoder->SetError(::fidl::internal::kCodingErrorUnknownUnionTag);
        return 0;
      }
    }
  }

  static constexpr std::optional<::test_protocollayouts::MainProtocolTwoWayAnonRequest::Tag> IndexToTag(size_t index) {
    switch (index) {
      case 1:
        return ::test_protocollayouts::MainProtocolTwoWayAnonRequest::Tag::kB;
      default:
        return ::test_protocollayouts::MainProtocolTwoWayAnonRequest::Tag::kUnknown;
    }
  }
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolOneWayAnonRequestTable;

class MainProtocolOneWayAnonRequest {
 private:
  struct Storage_;

 public:
  MainProtocolOneWayAnonRequest(Storage_ storage) noexcept : storage_(std::move(storage)) {}
  MainProtocolOneWayAnonRequest() noexcept = default;
  MainProtocolOneWayAnonRequest(MainProtocolOneWayAnonRequest&&) noexcept = default;
  MainProtocolOneWayAnonRequest& operator=(MainProtocolOneWayAnonRequest&&) noexcept = default;
  MainProtocolOneWayAnonRequest(const MainProtocolOneWayAnonRequest& other) noexcept : MainProtocolOneWayAnonRequest(other.CloneStorage_()) {}
  MainProtocolOneWayAnonRequest& operator=(const MainProtocolOneWayAnonRequest& other) noexcept {
    storage_ = other.CloneStorage_();
    return *this;
  }
  bool operator==(const MainProtocolOneWayAnonRequest& other) const noexcept {
    return ::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolOneWayAnonRequest>::Equal(this, &other);
  }
  bool operator!=(const MainProtocolOneWayAnonRequest& other) const noexcept {
    return !::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolOneWayAnonRequest>::Equal(this, &other);
  }

  bool IsEmpty() const {
    return !(storage_.a.has_value());
  }

  const std::optional<uint16_t>& a() const { return storage_.a; }
  ::std::optional<uint16_t>& a() { return storage_.a; }

  MainProtocolOneWayAnonRequest(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : MainProtocolOneWayAnonRequest(Storage_{}) {}

 private:
  struct Storage_ final {
    ::std::optional<uint16_t> a{};
  };

  // TODO(https://fxbug.dev/91252): Box the storage.
  Storage_ storage_;
  Storage_ CloneStorage_() const;
  friend struct ::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolOneWayAnonRequest>;
  friend struct ::fidl::internal::MemberVisitor<::test_protocollayouts::MainProtocolOneWayAnonRequest>;
  static constexpr auto kMembers = std::make_tuple(::fidl::internal::NaturalTableMember<Storage_, uint16_t, fidl::internal::NaturalCodingConstraintEmpty>{
      1, &Storage_::a});
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolOnAnonRequestTable;

class MainProtocolOnAnonRequest {
 private:
  using Storage_ =
      std::variant<
          std::monostate, bool>;

 public:
  // TODO: share union tag types between wire & natural.
  enum class Tag : fidl_union_tag_t {
    kB = 1,  // 0x1
    kUnknown = ::std::numeric_limits<::fidl_union_tag_t>::max(),
  };
  // Create an unknown value of this union.
  MainProtocolOnAnonRequest() : storage_(std::make_shared<Storage_>()) {}

  MainProtocolOnAnonRequest(MainProtocolOnAnonRequest&& other) noexcept
      : MainProtocolOnAnonRequest(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{}) {
    *storage_ = std::move(*other.storage_);
  }
  MainProtocolOnAnonRequest& operator=(MainProtocolOnAnonRequest&& other) noexcept {
    if (this != &other) {
      *storage_ = std::move(*other.storage_);
    }
    return *this;
  }
  MainProtocolOnAnonRequest(const MainProtocolOnAnonRequest& other) noexcept : MainProtocolOnAnonRequest(other.CloneStorage_()) {}
  MainProtocolOnAnonRequest& operator=(const MainProtocolOnAnonRequest& other) noexcept {
    if (this != &other) {
      storage_ = other.CloneStorage_();
    }
    return *this;
  }

  bool operator==(const MainProtocolOnAnonRequest& other) const noexcept {
    return *storage_ == *other.storage_;
  }
  bool operator!=(const MainProtocolOnAnonRequest& other) const noexcept {
    return *storage_ != *other.storage_;
  }

  constexpr ::test_protocollayouts::MainProtocolOnAnonRequest::Tag Which() const {
    return MainProtocolOnAnonRequest::IndexToTag(storage_->index()).value();
  }
  static MainProtocolOnAnonRequest WithB(bool val) {
    return MainProtocolOnAnonRequest(std::make_shared<Storage_>(
        std::in_place_index_t<1>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<1, Storage_> b() const {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<1, Storage_> b() {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }

  MainProtocolOnAnonRequest(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : storage_(std::make_shared<Storage_>()) {}

 private:
  std::shared_ptr<Storage_> storage_;
  std::shared_ptr<Storage_> CloneStorage_() const;
  friend struct ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolOnAnonRequest>;
  static constexpr auto kMembers = std::make_tuple(
      ::fidl::internal::NaturalUnionMember<::fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>());

  explicit MainProtocolOnAnonRequest(std::shared_ptr<Storage_> storage) : storage_(std::move(storage)) {}

  static constexpr size_t TagToIndex(::fidl::internal::NaturalDecoder* decoder, ::test_protocollayouts::MainProtocolOnAnonRequest::Tag tag) {
    switch (tag) {
      case ::test_protocollayouts::MainProtocolOnAnonRequest::Tag::kB:
        return 1;
      case ::test_protocollayouts::MainProtocolOnAnonRequest::Tag::kUnknown:
        return 0;
      default: {
        decoder->SetError(::fidl::internal::kCodingErrorUnknownUnionTag);
        return 0;
      }
    }
  }

  static constexpr std::optional<::test_protocollayouts::MainProtocolOnAnonRequest::Tag> IndexToTag(size_t index) {
    switch (index) {
      case 1:
        return ::test_protocollayouts::MainProtocolOnAnonRequest::Tag::kB;
      default:
        return ::test_protocollayouts::MainProtocolOnAnonRequest::Tag::kUnknown;
    }
  }
};

extern "C" const fidl_type_t test_protocollayouts_LocalUnionPayloadTable;

class LocalUnionPayload {
 private:
  using Storage_ =
      std::variant<
          std::monostate, bool>;

 public:
  // TODO: share union tag types between wire & natural.
  enum class Tag : fidl_union_tag_t {
    kB = 1,  // 0x1
    kUnknown = ::std::numeric_limits<::fidl_union_tag_t>::max(),
  };
  // Create an unknown value of this union.
  LocalUnionPayload() : storage_(std::make_shared<Storage_>()) {}

  LocalUnionPayload(LocalUnionPayload&& other) noexcept
      : LocalUnionPayload(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{}) {
    *storage_ = std::move(*other.storage_);
  }
  LocalUnionPayload& operator=(LocalUnionPayload&& other) noexcept {
    if (this != &other) {
      *storage_ = std::move(*other.storage_);
    }
    return *this;
  }
  LocalUnionPayload(const LocalUnionPayload& other) noexcept : LocalUnionPayload(other.CloneStorage_()) {}
  LocalUnionPayload& operator=(const LocalUnionPayload& other) noexcept {
    if (this != &other) {
      storage_ = other.CloneStorage_();
    }
    return *this;
  }

  bool operator==(const LocalUnionPayload& other) const noexcept {
    return *storage_ == *other.storage_;
  }
  bool operator!=(const LocalUnionPayload& other) const noexcept {
    return *storage_ != *other.storage_;
  }

  constexpr ::test_protocollayouts::LocalUnionPayload::Tag Which() const {
    return LocalUnionPayload::IndexToTag(storage_->index()).value();
  }
  static LocalUnionPayload WithB(bool val) {
    return LocalUnionPayload(std::make_shared<Storage_>(
        std::in_place_index_t<1>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<1, Storage_> b() const {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<1, Storage_> b() {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }

  LocalUnionPayload(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : storage_(std::make_shared<Storage_>()) {}

 private:
  std::shared_ptr<Storage_> storage_;
  std::shared_ptr<Storage_> CloneStorage_() const;
  friend struct ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::LocalUnionPayload>;
  static constexpr auto kMembers = std::make_tuple(
      ::fidl::internal::NaturalUnionMember<::fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>());

  explicit LocalUnionPayload(std::shared_ptr<Storage_> storage) : storage_(std::move(storage)) {}

  static constexpr size_t TagToIndex(::fidl::internal::NaturalDecoder* decoder, ::test_protocollayouts::LocalUnionPayload::Tag tag) {
    switch (tag) {
      case ::test_protocollayouts::LocalUnionPayload::Tag::kB:
        return 1;
      case ::test_protocollayouts::LocalUnionPayload::Tag::kUnknown:
        return 0;
      default: {
        decoder->SetError(::fidl::internal::kCodingErrorUnknownUnionTag);
        return 0;
      }
    }
  }

  static constexpr std::optional<::test_protocollayouts::LocalUnionPayload::Tag> IndexToTag(size_t index) {
    switch (index) {
      case 1:
        return ::test_protocollayouts::LocalUnionPayload::Tag::kB;
      default:
        return ::test_protocollayouts::LocalUnionPayload::Tag::kUnknown;
    }
  }
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_TwoWayLocalWithError_ResultTable;

class MainProtocolTwoWayLocalWithErrorResult {
 private:
  using Storage_ =
      std::variant<
          std::monostate, ::test_protocollayouts::LocalUnionPayload, uint32_t>;

 public:
  // TODO: share union tag types between wire & natural.
  enum class Tag : fidl_union_tag_t {
    kResponse = 1,  // 0x1
    kErr = 2,       // 0x2
  };

  MainProtocolTwoWayLocalWithErrorResult(MainProtocolTwoWayLocalWithErrorResult&& other) noexcept
      : MainProtocolTwoWayLocalWithErrorResult(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{}) {
    *storage_ = std::move(*other.storage_);
  }
  MainProtocolTwoWayLocalWithErrorResult& operator=(MainProtocolTwoWayLocalWithErrorResult&& other) noexcept {
    if (this != &other) {
      *storage_ = std::move(*other.storage_);
    }
    return *this;
  }
  MainProtocolTwoWayLocalWithErrorResult(const MainProtocolTwoWayLocalWithErrorResult& other) noexcept : MainProtocolTwoWayLocalWithErrorResult(other.CloneStorage_()) {}
  MainProtocolTwoWayLocalWithErrorResult& operator=(const MainProtocolTwoWayLocalWithErrorResult& other) noexcept {
    if (this != &other) {
      storage_ = other.CloneStorage_();
    }
    return *this;
  }

  bool operator==(const MainProtocolTwoWayLocalWithErrorResult& other) const noexcept {
    return *storage_ == *other.storage_;
  }
  bool operator!=(const MainProtocolTwoWayLocalWithErrorResult& other) const noexcept {
    return *storage_ != *other.storage_;
  }

  constexpr ::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult::Tag Which() const {
    return MainProtocolTwoWayLocalWithErrorResult::IndexToTag(storage_->index()).value();
  }
  static MainProtocolTwoWayLocalWithErrorResult WithResponse(::test_protocollayouts::LocalUnionPayload val) {
    return MainProtocolTwoWayLocalWithErrorResult(std::make_shared<Storage_>(
        std::in_place_index_t<1>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<1, Storage_> response() const {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<1, Storage_> response() {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  static MainProtocolTwoWayLocalWithErrorResult WithErr(uint32_t val) {
    return MainProtocolTwoWayLocalWithErrorResult(std::make_shared<Storage_>(
        std::in_place_index_t<2>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<2, Storage_> err() const {
    return ::fidl::internal::UnionMemberView<2, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<2, Storage_> err() {
    return ::fidl::internal::UnionMemberView<2, Storage_>(storage_);
  }

  MainProtocolTwoWayLocalWithErrorResult(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : storage_(std::make_shared<Storage_>()) {}

 private:
  std::shared_ptr<Storage_> storage_;
  std::shared_ptr<Storage_> CloneStorage_() const;
  friend struct ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult>;
  static constexpr auto kMembers = std::make_tuple(
      ::fidl::internal::NaturalUnionMember<::fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>());

  explicit MainProtocolTwoWayLocalWithErrorResult(std::shared_ptr<Storage_> storage) : storage_(std::move(storage)) {}

  static constexpr size_t TagToIndex(::fidl::internal::NaturalDecoder* decoder, ::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult::Tag tag) {
    switch (tag) {
      case ::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult::Tag::kResponse:
        return 1;
      case ::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult::Tag::kErr:
        return 2;
      default: {
        decoder->SetError(::fidl::internal::kCodingErrorUnknownUnionTag);
        return 0;
      }
    }
  }

  static constexpr std::optional<::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult::Tag> IndexToTag(size_t index) {
    switch (index) {
      case 1:
        return ::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult::Tag::kResponse;
      case 2:
        return ::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult::Tag::kErr;
      default:
        return std::nullopt;
    }
  }
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolTwoWayLocalWithErrorTopResponseTable;

class MainProtocolTwoWayLocalWithErrorTopResponse {
 private:
  struct Storage_;

 public:
  MainProtocolTwoWayLocalWithErrorTopResponse(Storage_ storage) noexcept : storage_(std::move(storage)) {}
  MainProtocolTwoWayLocalWithErrorTopResponse(::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult result) noexcept
      : storage_({.result = std::move(result)}) {}

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdefaulted-function-deleted"
  // Default constructs a |MainProtocolTwoWayLocalWithErrorTopResponse| only if all of its members are default constructible.
  MainProtocolTwoWayLocalWithErrorTopResponse() = default;
#pragma clang diagnostic pop

  MainProtocolTwoWayLocalWithErrorTopResponse(MainProtocolTwoWayLocalWithErrorTopResponse&&) noexcept = default;
  MainProtocolTwoWayLocalWithErrorTopResponse& operator=(MainProtocolTwoWayLocalWithErrorTopResponse&&) noexcept = default;
  MainProtocolTwoWayLocalWithErrorTopResponse(const MainProtocolTwoWayLocalWithErrorTopResponse& other) noexcept : MainProtocolTwoWayLocalWithErrorTopResponse(other.CloneStorage_()) {}
  MainProtocolTwoWayLocalWithErrorTopResponse& operator=(const MainProtocolTwoWayLocalWithErrorTopResponse& other) noexcept {
    storage_ = other.CloneStorage_();
    return *this;
  }

  bool operator==(const MainProtocolTwoWayLocalWithErrorTopResponse& other) const noexcept {
    return ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolTwoWayLocalWithErrorTopResponse, 16>::Equal(this, &other);
  }
  bool operator!=(const MainProtocolTwoWayLocalWithErrorTopResponse& other) const noexcept {
    return !::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolTwoWayLocalWithErrorTopResponse, 16>::Equal(this, &other);
  }

  const ::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult&
  result() const {
    return storage_.result;
  }

  ::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult& result() {
    return storage_.result;
  }

  MainProtocolTwoWayLocalWithErrorTopResponse(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : MainProtocolTwoWayLocalWithErrorTopResponse(Storage_{
                                                                                                                .result = ::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{},
                                                                                                            }) {}

 private:
  struct Storage_ final {
    ::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult result;
  };

  Storage_ storage_;
  Storage_ CloneStorage_() const;

  friend struct ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolTwoWayLocalWithErrorTopResponse, 16>;
  friend struct ::fidl::internal::MemberVisitor<::test_protocollayouts::MainProtocolTwoWayLocalWithErrorTopResponse>;
  static constexpr auto kMembers = std::make_tuple(::fidl::internal::NaturalStructMember<Storage_, ::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult, fidl::internal::NaturalCodingConstraintEmpty>{
      &Storage_::result, 0});
  static constexpr auto kPadding = std::make_tuple();
};

extern "C" const fidl_type_t test_protocollayouts_LocalTablePayloadTable;

class LocalTablePayload {
 private:
  struct Storage_;

 public:
  LocalTablePayload(Storage_ storage) noexcept : storage_(std::move(storage)) {}
  LocalTablePayload() noexcept = default;
  LocalTablePayload(LocalTablePayload&&) noexcept = default;
  LocalTablePayload& operator=(LocalTablePayload&&) noexcept = default;
  LocalTablePayload(const LocalTablePayload& other) noexcept : LocalTablePayload(other.CloneStorage_()) {}
  LocalTablePayload& operator=(const LocalTablePayload& other) noexcept {
    storage_ = other.CloneStorage_();
    return *this;
  }
  bool operator==(const LocalTablePayload& other) const noexcept {
    return ::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::LocalTablePayload>::Equal(this, &other);
  }
  bool operator!=(const LocalTablePayload& other) const noexcept {
    return !::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::LocalTablePayload>::Equal(this, &other);
  }

  bool IsEmpty() const {
    return !(storage_.a.has_value());
  }

  const std::optional<uint16_t>& a() const { return storage_.a; }
  ::std::optional<uint16_t>& a() { return storage_.a; }

  LocalTablePayload(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : LocalTablePayload(Storage_{}) {}

 private:
  struct Storage_ final {
    ::std::optional<uint16_t> a{};
  };

  // TODO(https://fxbug.dev/91252): Box the storage.
  Storage_ storage_;
  Storage_ CloneStorage_() const;
  friend struct ::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::LocalTablePayload>;
  friend struct ::fidl::internal::MemberVisitor<::test_protocollayouts::LocalTablePayload>;
  static constexpr auto kMembers = std::make_tuple(::fidl::internal::NaturalTableMember<Storage_, uint16_t, fidl::internal::NaturalCodingConstraintEmpty>{
      1, &Storage_::a});
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_OnLocalWithError_ResultTable;

class MainProtocolOnLocalWithErrorResult {
 private:
  using Storage_ =
      std::variant<
          std::monostate, ::test_protocollayouts::LocalTablePayload, uint32_t>;

 public:
  // TODO: share union tag types between wire & natural.
  enum class Tag : fidl_union_tag_t {
    kResponse = 1,  // 0x1
    kErr = 2,       // 0x2
  };

  MainProtocolOnLocalWithErrorResult(MainProtocolOnLocalWithErrorResult&& other) noexcept
      : MainProtocolOnLocalWithErrorResult(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{}) {
    *storage_ = std::move(*other.storage_);
  }
  MainProtocolOnLocalWithErrorResult& operator=(MainProtocolOnLocalWithErrorResult&& other) noexcept {
    if (this != &other) {
      *storage_ = std::move(*other.storage_);
    }
    return *this;
  }
  MainProtocolOnLocalWithErrorResult(const MainProtocolOnLocalWithErrorResult& other) noexcept : MainProtocolOnLocalWithErrorResult(other.CloneStorage_()) {}
  MainProtocolOnLocalWithErrorResult& operator=(const MainProtocolOnLocalWithErrorResult& other) noexcept {
    if (this != &other) {
      storage_ = other.CloneStorage_();
    }
    return *this;
  }

  bool operator==(const MainProtocolOnLocalWithErrorResult& other) const noexcept {
    return *storage_ == *other.storage_;
  }
  bool operator!=(const MainProtocolOnLocalWithErrorResult& other) const noexcept {
    return *storage_ != *other.storage_;
  }

  constexpr ::test_protocollayouts::MainProtocolOnLocalWithErrorResult::Tag Which() const {
    return MainProtocolOnLocalWithErrorResult::IndexToTag(storage_->index()).value();
  }
  static MainProtocolOnLocalWithErrorResult WithResponse(::test_protocollayouts::LocalTablePayload val) {
    return MainProtocolOnLocalWithErrorResult(std::make_shared<Storage_>(
        std::in_place_index_t<1>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<1, Storage_> response() const {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<1, Storage_> response() {
    return ::fidl::internal::UnionMemberView<1, Storage_>(storage_);
  }
  static MainProtocolOnLocalWithErrorResult WithErr(uint32_t val) {
    return MainProtocolOnLocalWithErrorResult(std::make_shared<Storage_>(
        std::in_place_index_t<2>{},
        std::move(val)));
  }

  const ::fidl::internal::UnionMemberView<2, Storage_> err() const {
    return ::fidl::internal::UnionMemberView<2, Storage_>(storage_);
  }
  ::fidl::internal::UnionMemberView<2, Storage_> err() {
    return ::fidl::internal::UnionMemberView<2, Storage_>(storage_);
  }

  MainProtocolOnLocalWithErrorResult(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : storage_(std::make_shared<Storage_>()) {}

 private:
  std::shared_ptr<Storage_> storage_;
  std::shared_ptr<Storage_> CloneStorage_() const;
  friend struct ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolOnLocalWithErrorResult>;
  static constexpr auto kMembers = std::make_tuple(
      ::fidl::internal::NaturalUnionMember<::fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>(), ::fidl::internal::NaturalUnionMember<fidl::internal::NaturalCodingConstraintEmpty>());

  explicit MainProtocolOnLocalWithErrorResult(std::shared_ptr<Storage_> storage) : storage_(std::move(storage)) {}

  static constexpr size_t TagToIndex(::fidl::internal::NaturalDecoder* decoder, ::test_protocollayouts::MainProtocolOnLocalWithErrorResult::Tag tag) {
    switch (tag) {
      case ::test_protocollayouts::MainProtocolOnLocalWithErrorResult::Tag::kResponse:
        return 1;
      case ::test_protocollayouts::MainProtocolOnLocalWithErrorResult::Tag::kErr:
        return 2;
      default: {
        decoder->SetError(::fidl::internal::kCodingErrorUnknownUnionTag);
        return 0;
      }
    }
  }

  static constexpr std::optional<::test_protocollayouts::MainProtocolOnLocalWithErrorResult::Tag> IndexToTag(size_t index) {
    switch (index) {
      case 1:
        return ::test_protocollayouts::MainProtocolOnLocalWithErrorResult::Tag::kResponse;
      case 2:
        return ::test_protocollayouts::MainProtocolOnLocalWithErrorResult::Tag::kErr;
      default:
        return std::nullopt;
    }
  }
};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolOnLocalWithErrorRequestTable;

class MainProtocolOnLocalWithErrorRequest {
 private:
  struct Storage_;

 public:
  MainProtocolOnLocalWithErrorRequest(Storage_ storage) noexcept : storage_(std::move(storage)) {}
  MainProtocolOnLocalWithErrorRequest(::test_protocollayouts::MainProtocolOnLocalWithErrorResult result) noexcept
      : storage_({.result = std::move(result)}) {}

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdefaulted-function-deleted"
  // Default constructs a |MainProtocolOnLocalWithErrorRequest| only if all of its members are default constructible.
  MainProtocolOnLocalWithErrorRequest() = default;
#pragma clang diagnostic pop

  MainProtocolOnLocalWithErrorRequest(MainProtocolOnLocalWithErrorRequest&&) noexcept = default;
  MainProtocolOnLocalWithErrorRequest& operator=(MainProtocolOnLocalWithErrorRequest&&) noexcept = default;
  MainProtocolOnLocalWithErrorRequest(const MainProtocolOnLocalWithErrorRequest& other) noexcept : MainProtocolOnLocalWithErrorRequest(other.CloneStorage_()) {}
  MainProtocolOnLocalWithErrorRequest& operator=(const MainProtocolOnLocalWithErrorRequest& other) noexcept {
    storage_ = other.CloneStorage_();
    return *this;
  }

  bool operator==(const MainProtocolOnLocalWithErrorRequest& other) const noexcept {
    return ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolOnLocalWithErrorRequest, 16>::Equal(this, &other);
  }
  bool operator!=(const MainProtocolOnLocalWithErrorRequest& other) const noexcept {
    return !::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolOnLocalWithErrorRequest, 16>::Equal(this, &other);
  }

  const ::test_protocollayouts::MainProtocolOnLocalWithErrorResult&
  result() const {
    return storage_.result;
  }

  ::test_protocollayouts::MainProtocolOnLocalWithErrorResult& result() {
    return storage_.result;
  }

  MainProtocolOnLocalWithErrorRequest(::fidl::internal::DefaultConstructPossiblyInvalidObjectTag) : MainProtocolOnLocalWithErrorRequest(Storage_{
                                                                                                        .result = ::fidl::internal::DefaultConstructPossiblyInvalidObjectTag{},
                                                                                                    }) {}

 private:
  struct Storage_ final {
    ::test_protocollayouts::MainProtocolOnLocalWithErrorResult result;
  };

  Storage_ storage_;
  Storage_ CloneStorage_() const;

  friend struct ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolOnLocalWithErrorRequest, 16>;
  friend struct ::fidl::internal::MemberVisitor<::test_protocollayouts::MainProtocolOnLocalWithErrorRequest>;
  static constexpr auto kMembers = std::make_tuple(::fidl::internal::NaturalStructMember<Storage_, ::test_protocollayouts::MainProtocolOnLocalWithErrorResult, fidl::internal::NaturalCodingConstraintEmpty>{
      &Storage_::result, 0});
  static constexpr auto kPadding = std::make_tuple();
};

}  // namespace test_protocollayouts
namespace fidl {

extern "C" const fidl_type_t test_protocollayouts_MainProtocolTwoWayImportWithErrorTopResponseTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolTwoWayImportWithErrorTopResponse> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolTwoWayImportWithErrorTopResponse, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolTwoWayImportWithErrorTopResponse, 16> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolTwoWayAnonWithErrorTopResponseTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorTopResponse> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorTopResponse, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorTopResponse, 16> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolOnImportWithErrorRequestTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolOnImportWithErrorRequest> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolOnImportWithErrorRequest, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolOnImportWithErrorRequest, 16> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolOnAnonWithErrorRequestTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolOnAnonWithErrorRequest> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolOnAnonWithErrorRequest, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolOnAnonWithErrorRequest, 16> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolTwoWayLocalWithErrorTopResponseTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolTwoWayLocalWithErrorTopResponse> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolTwoWayLocalWithErrorTopResponse, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolTwoWayLocalWithErrorTopResponse, 16> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolOnLocalWithErrorRequestTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolOnLocalWithErrorRequest> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolOnLocalWithErrorRequest, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalStructCodingTraits<::test_protocollayouts::MainProtocolOnLocalWithErrorRequest, 16> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_OnAnonWithError_ResponseTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolOnAnonWithErrorResponse> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolOnAnonWithErrorResponse, ::fidl::internal::NaturalCodingConstraintEmpty> : public ::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolOnAnonWithErrorResponse> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolTwoWayAnonWithErrorRequestTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorRequest> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorRequest, ::fidl::internal::NaturalCodingConstraintEmpty> : public ::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorRequest> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolTwoWayAnonResponseTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolTwoWayAnonResponse> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonResponse, ::fidl::internal::NaturalCodingConstraintEmpty> : public ::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonResponse> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolOneWayAnonRequestTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolOneWayAnonRequest> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolOneWayAnonRequest, ::fidl::internal::NaturalCodingConstraintEmpty> : public ::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::MainProtocolOneWayAnonRequest> {};

extern "C" const fidl_type_t test_protocollayouts_LocalTablePayloadTable;

template <>
struct IsFidlType<::test_protocollayouts::LocalTablePayload> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::LocalTablePayload, ::fidl::internal::NaturalCodingConstraintEmpty> : public ::fidl::internal::NaturalTableCodingTraits<::test_protocollayouts::LocalTablePayload> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_TwoWayImportWithError_ResultTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult> : public std::true_type {};
template <>
struct IsUnion<::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolTwoWayImportWithErrorResult> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_TwoWayAnonWithError_ResponseTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResponse> : public std::true_type {};
template <>
struct IsUnion<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResponse> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResponse, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResponse> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_TwoWayAnonWithError_ResultTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult> : public std::true_type {};
template <>
struct IsUnion<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonWithErrorResult> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_OnImportWithError_ResultTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolOnImportWithErrorResult> : public std::true_type {};
template <>
struct IsUnion<::test_protocollayouts::MainProtocolOnImportWithErrorResult> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolOnImportWithErrorResult, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolOnImportWithErrorResult> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_OnAnonWithError_ResultTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolOnAnonWithErrorResult> : public std::true_type {};
template <>
struct IsUnion<::test_protocollayouts::MainProtocolOnAnonWithErrorResult> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolOnAnonWithErrorResult, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolOnAnonWithErrorResult> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolTwoWayAnonRequestTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolTwoWayAnonRequest> : public std::true_type {};
template <>
struct IsUnion<::test_protocollayouts::MainProtocolTwoWayAnonRequest> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonRequest, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolTwoWayAnonRequest> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocolOnAnonRequestTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolOnAnonRequest> : public std::true_type {};
template <>
struct IsUnion<::test_protocollayouts::MainProtocolOnAnonRequest> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolOnAnonRequest, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolOnAnonRequest> {};

extern "C" const fidl_type_t test_protocollayouts_LocalUnionPayloadTable;

template <>
struct IsFidlType<::test_protocollayouts::LocalUnionPayload> : public std::true_type {};
template <>
struct IsUnion<::test_protocollayouts::LocalUnionPayload> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::LocalUnionPayload, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::LocalUnionPayload> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_TwoWayLocalWithError_ResultTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult> : public std::true_type {};
template <>
struct IsUnion<::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolTwoWayLocalWithErrorResult> {};

extern "C" const fidl_type_t test_protocollayouts_MainProtocol_OnLocalWithError_ResultTable;

template <>
struct IsFidlType<::test_protocollayouts::MainProtocolOnLocalWithErrorResult> : public std::true_type {};
template <>
struct IsUnion<::test_protocollayouts::MainProtocolOnLocalWithErrorResult> : public std::true_type {};

template <>
struct internal::NaturalCodingTraits<::test_protocollayouts::MainProtocolOnLocalWithErrorResult, ::fidl::internal::NaturalCodingConstraintEmpty> final
    : public ::fidl::internal::NaturalUnionCodingTraits<::test_protocollayouts::MainProtocolOnLocalWithErrorResult> {};

}  // namespace fidl