docs: public void marshall(Schedule schedule, ProtocolMarshaller protocolMarshaller) {
  
          if (schedule == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(schedule.getEndTime(), ENDTIME_BINDING);
              protocolMarshaller.marshall(schedule.getEventFilter(), EVENTFILTER_BINDING);
              protocolMarshaller.marshall(schedule.getFrequency(), FREQUENCY_BINDING);
              protocolMarshaller.marshall(schedule.getIsLocalTime(), ISLOCALTIME_BINDING);
              protocolMarshaller.marshall(schedule.getQuietTime(), QUIETTIME_BINDING);
              protocolMarshaller.marshall(schedule.getStartTime(), STARTTIME_BINDING);
              protocolMarshaller.marshall(schedule.getTimezone(), TIMEZONE_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }