docs/reference/fidl/language/error-catalog/_fi-0165.md

## fi-0165: Expected type {:#fi-0165}

This error occurs when you use a constant or protocol identifier when FIDL is
expecting a type.

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

```fidl
{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/bad/fi-0165.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}
```

To fix this error, update your code to use a valid type:

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

```fidl
{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/good/fi-0165.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}
```

Protocols are not considered FIDL types and also cannot be used where a type is
expected.