code: @Override
      public ListServiceSpecificCredentialsResult listServiceSpecificCredentials(ListServiceSpecificCredentialsRequest request) {
          request = beforeClientExecution(request);
          return executeListServiceSpecificCredentials(request);
      }
docs: <p>
  Returns information about the service-specific credentials associated with the specified IAM user. If none
  exists, the operation returns an empty list. The service-specific credentials returned by this operation are used
  only for authenticating the IAM user to a specific service. For more information about using service-specific
  credentials to authenticate to an AWS service, see <a
  href="https://docs.aws.amazon.com/codecommit/latest/userguide/setting-up-gc.html">Set Up service-specific
  credentials</a> in the AWS CodeCommit User Guide.
  </p>
  
  @param listServiceSpecificCredentialsRequest
  @return Result of the ListServiceSpecificCredentials operation returned by the service.
  @throws NoSuchEntityException
  The request was rejected because it referenced a resource entity that does not exist. The error message
  describes the resource.
  @throws ServiceNotSupportedException
  The specified service does not support service-specific credentials.
  @sample AmazonIdentityManagement.ListServiceSpecificCredentials
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/iam-2010-05-08/ListServiceSpecificCredentials"
  target="_top">AWS API Documentation</a>