@Override
        public DocWriteRequest<?> createDeleteRequest(String index, String docType, String key) {
            return new DeleteRequest(index, key);
        }
Version-specific creation of {@link org.elasticsearch.action.ActionRequest}s used by the
sink.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/elasticsearch-7/src/main/java/org/apache/inlong/sort/elasticsearch7/table/Elasticsearch7DynamicSink.java