@Override
    public HandlerRegistration addCellPreviewHandler(CellPreviewEvent.Handler<T> handler) {
        return presenter.addCellPreviewHandler(handler);
    }
Constructs an {@link AbstractHasData} with the given page size.

@param widget the parent {@link Widget}
@param pageSize the page size
@param keyProvider the key provider, or null
stroom-core-client-widget/src/main/java/com/google/gwt/user/cellview/client/AbstractHasData.java