docs: public void marshall(ApplicationConfigurationUpdate applicationConfigurationUpdate, ProtocolMarshaller protocolMarshaller) {
  
          if (applicationConfigurationUpdate == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(applicationConfigurationUpdate.getSqlApplicationConfigurationUpdate(), SQLAPPLICATIONCONFIGURATIONUPDATE_BINDING);
              protocolMarshaller.marshall(applicationConfigurationUpdate.getApplicationCodeConfigurationUpdate(), APPLICATIONCODECONFIGURATIONUPDATE_BINDING);
              protocolMarshaller.marshall(applicationConfigurationUpdate.getFlinkApplicationConfigurationUpdate(), FLINKAPPLICATIONCONFIGURATIONUPDATE_BINDING);
              protocolMarshaller.marshall(applicationConfigurationUpdate.getEnvironmentPropertyUpdates(), ENVIRONMENTPROPERTYUPDATES_BINDING);
              protocolMarshaller.marshall(applicationConfigurationUpdate.getApplicationSnapshotConfigurationUpdate(),
                      APPLICATIONSNAPSHOTCONFIGURATIONUPDATE_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }