code: def say_hi_task(inp: str):
      return f"Ray task got message: '{inp}'"
  
file_path: ray/doc/source/serve/doc_code/model_composition/response_to_object_ref_example.py
imports: import ray
  from ray import serve
  from ray.serve.handle import DeploymentHandle, DeploymentResponse
label_desc: Use image node_id 1 for calling a global function with example usage: say_hi_task(inp) and returns: str, inp, str