all_flat_models = all_flat_models.union(v2_flat_models)  # type: ignore[arg-type]

    model_name_map = get_model_name_map(all_flat_models)  # type: ignore[arg-type]
    return model_name_map


def get_flat_models_from_model(
    model: type["BaseModel"], known_models: Union[TypeModelSet, None] = None
) -> TypeModelSet:
    known_models = known_models or set()
    fields = get_model_fields(model)