code: public void marshall(DocumentIdentifier documentIdentifier, ProtocolMarshaller protocolMarshaller) {
  
          if (documentIdentifier == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(documentIdentifier.getName(), NAME_BINDING);
              protocolMarshaller.marshall(documentIdentifier.getOwner(), OWNER_BINDING);
              protocolMarshaller.marshall(documentIdentifier.getVersionName(), VERSIONNAME_BINDING);
              protocolMarshaller.marshall(documentIdentifier.getPlatformTypes(), PLATFORMTYPES_BINDING);
              protocolMarshaller.marshall(documentIdentifier.getDocumentVersion(), DOCUMENTVERSION_BINDING);
              protocolMarshaller.marshall(documentIdentifier.getDocumentType(), DOCUMENTTYPE_BINDING);
              protocolMarshaller.marshall(documentIdentifier.getSchemaVersion(), SCHEMAVERSION_BINDING);
              protocolMarshaller.marshall(documentIdentifier.getDocumentFormat(), DOCUMENTFORMAT_BINDING);
              protocolMarshaller.marshall(documentIdentifier.getTargetType(), TARGETTYPE_BINDING);
              protocolMarshaller.marshall(documentIdentifier.getTags(), TAGS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.