docs: public void marshall(BackupRuleInput backupRuleInput, ProtocolMarshaller protocolMarshaller) {
  
          if (backupRuleInput == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(backupRuleInput.getRuleName(), RULENAME_BINDING);
              protocolMarshaller.marshall(backupRuleInput.getTargetBackupVaultName(), TARGETBACKUPVAULTNAME_BINDING);
              protocolMarshaller.marshall(backupRuleInput.getScheduleExpression(), SCHEDULEEXPRESSION_BINDING);
              protocolMarshaller.marshall(backupRuleInput.getStartWindowMinutes(), STARTWINDOWMINUTES_BINDING);
              protocolMarshaller.marshall(backupRuleInput.getCompletionWindowMinutes(), COMPLETIONWINDOWMINUTES_BINDING);
              protocolMarshaller.marshall(backupRuleInput.getLifecycle(), LIFECYCLE_BINDING);
              protocolMarshaller.marshall(backupRuleInput.getRecoveryPointTags(), RECOVERYPOINTTAGS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }