docs: private RequestPaymentConfiguration getBucketRequestPayment(
              GetRequestPaymentConfigurationRequest getRequestPaymentConfigurationRequest) {
  
          String bucketName = getRequestPaymentConfigurationRequest
                  .getBucketName();
  
          rejectNull(
                  bucketName,
                  "The bucket name parameter must be specified while getting the Request Payment Configuration.");
  
          Request<GetRequestPaymentConfigurationRequest> request = createRequest(
                  bucketName, null, getRequestPaymentConfigurationRequest,
                  HttpMethodName.GET);
          request.addHandlerContext(HandlerContextKey.OPERATION_NAME, "GetBucketRequestPayment");
          request.addParameter("requestPayment", null);
          request.addHeader("Content-Type", "application/xml");
  
          return invoke(request,
                  new Unmarshallers.RequestPaymentConfigurationUnmarshaller(),
                  bucketName, null);
      }