rich text representation.
                    * `url`: The URL for the target documentation. Value MUST be in
                        the form of a URL.

                Read more in the
                [FastAPI docs for Metadata and Docs URLs](https://fastapi.tiangolo.com/tutorial/metadata/#metadata-for-tags).

                **Example**

    assert dependant.call is not None, "dependant.call must be a function"
    is_coroutine = asyncio.iscoroutinefunction(dependant.call)
    is_body_form = body_field and isinstance(body_field.field_info, params.Form)
    if isinstance(response_class, DefaultPlaceholder):
        actual_response_class: Type[Response] = response_class.value
    else:
        actual_response_class = response_class