@Override
    public void setSelected(final ExplorerNode item, final boolean selected) {
        if (selected) {
            setState(item, TickBoxState.TICK);
        } else {
            setState(item, TickBoxState.UNTICK);
        }
    }
Get the set of selected items.

@return the set of selected items
stroom-core-client/src/main/java/stroom/explorer/client/presenter/TickBoxSelectionModel.java