code: def is_valid_mosiacml_chat_model(model_name: str) -> bool:
      return any(
          model_name.lower().startswith(supported)
          for supported in MLFLOW_AI_GATEWAY_MOSAICML_CHAT_SUPPORTED_MODEL_PREFIXES
      )
  
imports: import base64
  import functools
  import inspect
  import json
  import logging
  import posixpath
  import re
  import textwrap
  import warnings
  from typing import List, Optional
  from urllib.parse import urlparse
  from mlflow.environment_variables import MLFLOW_GATEWAY_URI
  from mlflow.exceptions import MlflowException
  from mlflow.gateway.constants import MLFLOW_AI_GATEWAY_MOSAICML_CHAT_SUPPORTED_MODEL_PREFIXES
  from mlflow.utils.uri import append_to_uri_path
label_desc: Use image node_id 13 for calling a global function with example usage: is_valid_mosiacml_chat_model(model_name) and returns: any