* When a `response_model` is declared, the same `response_model` type declaration won't be used as is, it will be "cloned" to create an new one (a cloned Pydantic `Field` with all the submodels cloned as well).

        # Read body and auto-close files
        try:
            body: Any = None
            if body_field:
                if is_body_form:
                    body = await request.form()
                    file_stack.push_async_callback(body.close)
                else:
                    body_bytes = await request.body()