@final

The @final tag declares that a class must not be extended, or that a method must not be overridden any further. It is the documentation-level counterpart to PHP's native final keyword, used in places the keyword itself cannot reach — for example, to tell consumers that a method behaves as final by convention in a class that isn't itself declared final, or in generated stubs and interfaces where the native modifier does not apply.

Parsing a @final tag produces a FinalTag instance. Being a pure marker, it adds nothing beyond the $name and optional $description every Tag already carries.

phpDocumentor documents @final on its own tag reference page; unlike @api, @author, @copyright, @deprecated, and @internal, it is not part of the PSR-19 draft's list of tags.