docs: public void marshall(SchemaExtensionInfo schemaExtensionInfo, ProtocolMarshaller protocolMarshaller) {
  
          if (schemaExtensionInfo == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(schemaExtensionInfo.getDirectoryId(), DIRECTORYID_BINDING);
              protocolMarshaller.marshall(schemaExtensionInfo.getSchemaExtensionId(), SCHEMAEXTENSIONID_BINDING);
              protocolMarshaller.marshall(schemaExtensionInfo.getDescription(), DESCRIPTION_BINDING);
              protocolMarshaller.marshall(schemaExtensionInfo.getSchemaExtensionStatus(), SCHEMAEXTENSIONSTATUS_BINDING);
              protocolMarshaller.marshall(schemaExtensionInfo.getSchemaExtensionStatusReason(), SCHEMAEXTENSIONSTATUSREASON_BINDING);
              protocolMarshaller.marshall(schemaExtensionInfo.getStartDateTime(), STARTDATETIME_BINDING);
              protocolMarshaller.marshall(schemaExtensionInfo.getEndDateTime(), ENDDATETIME_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }