如何单独设置“点一下选中，再点一下清除效果”的属性

@SPI.ClassFactory(
BaseElementWidget.Token({
viewType: ViewType.Table,
widget: ‘tree’
})
)
export class DisableUnSelectTableSearchTreeWidget extends TableSearchTreeWidget {
protected async onNodeUnselected(node: OioTreeNode<TreeData>) {}
}