default List<StreamField> addStreamFieldsForSinkMultiple(List<StreamField> streamFields) {
        return new ArrayList<>();
    }
Parse format

@param multipleEnable whether to enable multi-write
@param multipleFormat data serialization format
@return the format for serialized content
inlong-manager/manager-pojo/src/main/java/org/apache/inlong/manager/pojo/sort/node/base/LoadNodeProvider.java