code: def is_blob_dict(d):
      return "mime_type" in d and "data" in d
  
imports: from __future__ import annotations
  from collections.abc import Iterable, Mapping
  import io
  import mimetypes
  import pathlib
  import typing
  from typing import Any, TypedDict, Union
  from google.ai import generativelanguage
label_desc: Use image node_id 4 for calling a global function with example usage: is_blob_dict(d) and returns: unknown