@Override
        public int hashCode() {
            return Objects.hash(pathPrefix, username, password);
        }
Serializable {@link RestClientFactory} used by the sink which enable authentication.
inlong-sort/sort-flink/sort-flink-v1.18/sort-connectors/elasticsearch6/src/main/java/org/apache/inlong/sort/elasticsearch6/table/Elasticsearch6DynamicSink.java