code: def add_screenshot(event: CaptureNotebookCell) -> None:
      data = event.src.split(",")[1].encode()
      _SCREENSHOTS[event.subscription] = Screenshot(
          base64.decodebytes(data), event.width
      )
  
imports: import base64
  from dataclasses import asdict, dataclass
  import re
  import typing
  import asyncio
  from bson import json_util
  from dacite import from_dict
  import eta.core.serial
  import eta.core.utils
  import fiftyone.core.odm.dataset
  import fiftyone.core.state
  from fiftyone.core.utils import lazy_import, run_sync_task
label_desc: Use image node_id 1 for calling a global function with example usage: add_screenshot(event) without return types