code: def setup(app):
      sys.modules.update(
          cairocffi=MyCairoCffi(),
      )
      return {"parallel_read_safe": True, "parallel_write_safe": True}
  
imports: import sys
  from unittest.mock import MagicMock
label_desc: Use image node_id 1 for calling a global function with example usage: setup(app) and returns: dict