code: def preprocess(self, payload: Any) -> Any:
      return payload
  
file_path: gradio/gradio/components/state.py
imports: from __future__ import annotations
  from copy import deepcopy
  from typing import Any
  from gradio_client.documentation import document, set_documentation_group
  from gradio.components.base import Component
label_desc: Use image node_id 2 for calling the State obj's underlying member method code with example usage: obj.preprocess(payload) and returns: payload