code: def post_response_rule(input):  # receives the model response
      print(f"post_response_rule:input={input}")  # noqa
      if len(input) < 200:
          return {
              "decision": False,
              "message": "This violates LiteLLM Proxy Rules. Response too short",
          }
      return {"decision": True}
  
label_desc: Use image node_id 1 for calling a global function with example usage: post_response_rule(input) and returns: dict, dict