code: @Override
      public ListEndpointConfigsResult listEndpointConfigs(ListEndpointConfigsRequest request) {
          request = beforeClientExecution(request);
          return executeListEndpointConfigs(request);
      }
docs: <p>
  Lists endpoint configurations.
  </p>
  
  @param listEndpointConfigsRequest
  @return Result of the ListEndpointConfigs operation returned by the service.
  @sample AmazonSageMaker.ListEndpointConfigs
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/sagemaker-2017-07-24/ListEndpointConfigs" target="_top">AWS
  API Documentation</a>