code: def ai21_parsed_completion_response(mdl):
      return {
          "id": None,
          "object": "text_completion",
          "created": 1677858242,
          "model": mdl,
          "choices": [
              {
                  "text": "\nIt looks like",
                  "index": 0,
                  "finish_reason": None,
              }
          ],
          "usage": {
              "prompt_tokens": None,
              "completion_tokens": None,
              "total_tokens": None,
          },
      }
  
file_path: mlflow/tests/gateway/providers/test_bedrock.py
imports: from unittest import mock
  import pytest
  from fastapi.encoders import jsonable_encoder
  from mlflow.gateway.config import AWSBaseConfig, AWSBedrockConfig, AWSIdAndKey, AWSRole, RouteConfig
  from mlflow.gateway.providers.bedrock import AWSBedrockModelProvider, AWSBedrockProvider
  from mlflow.gateway.schemas import completions
  from tests.gateway.providers.test_anthropic import completions_response
  from tests.gateway.providers.test_anthropic import parsed_completions_response
  from tests.gateway.providers.test_cohere import completions_response
label_desc: Use image node_id 2 for calling a global function with example usage: ai21_parsed_completion_response(mdl) and returns: dict