@Override
    public void deleteAll() {
        super.clear();
        size = 0;
    }
Holder object to contain a list of {@link StreamEvent}. Users can add {@link ComplexEventChunk}s to the
{@link ListEventHolder} where events in chunk will be added to the {@link StreamEvent} list.
modules/siddhi-core/src/main/java/io/siddhi/core/table/holder/ListEventHolder.java