@Override
    public void delete(StateEvent deletingEvent, IndexedEventHolder indexedEventHolder) {
        if ((Boolean) expressionExecutor.execute(deletingEvent)) {
            indexedEventHolder.deleteAll();
        }
    }
Implementation of {@link CollectionExecutor} which handles non condition
modules/siddhi-core/src/main/java/io/siddhi/core/util/collection/executor/NonCollectionExecutor.java