code: def handle_fn(base_model_context):
      handler = BaseHandler()
      handler.initialize(base_model_context)
  
      return handler.handle
  
file_path: serve/ts/torch_handler/unit_tests/test_envelopes.py
imports: import pytest
  from ts.torch_handler.base_handler import BaseHandler
  from ts.torch_handler.request_envelope.body import BodyEnvelope
  from ts.torch_handler.request_envelope.json import JSONEnvelope
label_desc: Use image node_id 1 for calling a global function with example usage: handle_fn(base_model_context) and returns: handler