code: public void marshall(FileSystemSize fileSystemSize, ProtocolMarshaller protocolMarshaller) {
  
          if (fileSystemSize == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(fileSystemSize.getValue(), VALUE_BINDING);
              protocolMarshaller.marshall(fileSystemSize.getTimestamp(), TIMESTAMP_BINDING);
              protocolMarshaller.marshall(fileSystemSize.getValueInIA(), VALUEINIA_BINDING);
              protocolMarshaller.marshall(fileSystemSize.getValueInStandard(), VALUEINSTANDARD_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.