code: def _underlying_provider(self):
      if (
          not self.config.model.name
      ) or "." not in self.config.model.name:
          return None
      provider = self.config.model.name.split(".")[0]
      return AWSBedrockModelProvider.of_str(provider)
  
imports: import json
  import time
  from enum import Enum
  import boto3
  import botocore.config
  import botocore.exceptions
  from fastapi import HTTPException
  from fastapi.encoders import jsonable_encoder
  from mlflow.gateway.config import AWSBedrockConfig, AWSIdAndKey, AWSRole, RouteConfig
  from mlflow.gateway.constants import MLFLOW_AI_GATEWAY_ANTHROPIC_DEFAULT_MAX_TOKENS
  from mlflow.gateway.exceptions import AIGatewayConfigException
  from mlflow.gateway.providers.anthropic import AnthropicAdapter
  from mlflow.gateway.providers.base import BaseProvider, ProviderAdapter
  from mlflow.gateway.providers.cohere import CohereAdapter
  from mlflow.gateway.providers.utils import rename_payload_keys
  from mlflow.gateway.schemas import chat, completions, embeddings
label_desc: Use image node_id 6 for calling the AWSBedrockProvider obj's underlying member method code with example usage: obj._underlying_provider() and returns: AWSBedrockModelProvider, None