code: def unsupported_mosaic_chat_model_config():
      return {
          "name": "chat",
          "route_type": "llm/v1/chat",
          "model": {
              "provider": "mosaicml",
              "name": "unsupported",
              "config": {
                  "mosaicml_api_key": "key",
              },
          },
      }
  
imports: from unittest import mock
  import pytest
  from aiohttp import ClientTimeout
  from fastapi import HTTPException
  from fastapi.encoders import jsonable_encoder
  from pydantic import ValidationError
  from mlflow import MlflowException
  from mlflow.gateway.config import RouteConfig
  from mlflow.gateway.constants import MLFLOW_GATEWAY_ROUTE_TIMEOUT_SECONDS
  from mlflow.gateway.providers.mosaicml import MosaicMLProvider
  from mlflow.gateway.schemas import chat, completions, embeddings
  from mlflow.gateway.schemas.chat import RequestMessage
  from tests.gateway.tools import MockAsyncResponse
label_desc: Use image node_id 10 for calling a global function with example usage: unsupported_mosaic_chat_model_config() and returns: dict