fi-0045: Attributes disallowed on using declarations {:#fi-0045}

Attributes cannot be attached to using declarations:

{% include “docs/reference/fidl/language/error-catalog/label/_bad.md” %}

{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/bad/fi-0045-a.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}

{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/bad/fi-0045-b.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}

Remove the attribute to resolve the error:

{% include “docs/reference/fidl/language/error-catalog/label/_good.md” %}

{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/good/fi-0045-a.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}

{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/good/fi-0045-b.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}

This restriction applies to /// ... doc comments as well, as those are merely syntactic sugar for the @doc("...") attribute.