code: @Override
      public CreateBillingGroupResult createBillingGroup(CreateBillingGroupRequest request) {
          request = beforeClientExecution(request);
          return executeCreateBillingGroup(request);
      }
docs: <p>
  Creates a billing group.
  </p>
  
  @param createBillingGroupRequest
  @return Result of the CreateBillingGroup operation returned by the service.
  @throws InvalidRequestException
  The request is not valid.
  @throws ResourceAlreadyExistsException
  The resource already exists.
  @throws ThrottlingException
  The rate exceeds the limit.
  @throws InternalFailureException
  An unexpected error has occurred.
  @sample AWSIot.CreateBillingGroup