@Override
    public int hashCode() {
        return NoOpFailureHandler.class.hashCode();
    }
An {@link ActionRequestFailureHandler} that simply fails the sink on any failures.
inlong-sort/sort-flink/sort-flink-v1.18/sort-connectors/elasticsearch-base/src/main/java/org/apache/inlong/sort/elasticsearch/util/NoOpFailureHandler.java