else:
                    yield {**(maybe_nested_state or {}), **(maybe_original_state or {})}

    return merged_lifespan  # type: ignore[return-value]


async def serialize_response(
    *,
    field: Optional[ModelField] = None,
    response_content: Any,
    include: Optional[IncEx] = None,
    exclude: Optional[IncEx] = None,
    by_alias: bool = True,