When using an official attribute that takes a single argument, you cannot name that argument:
{% include “docs/reference/fidl/language/error-catalog/label/_bad.md” %}
{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/bad/fi-0125.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}
Instead, pass the argument without giving it a name:
{% include “docs/reference/fidl/language/error-catalog/label/_good.md” %}
{% includecode gerrit_repo="fuchsia/fuchsia" gerrit_path="tools/fidl/fidlc/tests/fidl/good/fi-0125.test.fidl" exclude_regexp="\/\/ (Copyright 20|Use of|found in).*" %}
FIDL enforces this to make attributes more concise and consistent. Under the hood, the argument name is inferred to be value (and this will show up in the JSON IR) because that is the only argument the attribute takes.
