Antd Tree控件如何动态添加删除节点?

Question

async getAllEntry() //保存数据的     {        let menus =              [                 { id : "1" , name : "IT开发部" } ,                 { id : "2" , name : "行政部" } ,                 { id : "21" , name : "会计部" , parentId : "2" } ,                 { id : "22" , name : "出纳部" , parentId : "2" } ,                 { id : "3" , name : "咨询部" } ,             ]         return menus;     }                        <DirectoryTree          multiple          defaultExpandAll          onSelect={this.onSelect}          onExpand={this.onExpand}         >         {             ( function()             {             let subOrg = function(parentId)                     {                         return orgs.filter( org => parentId ? ( org.parentId == parentId ) : ( org.parentId == null ) ).map( org =>                             {                                 return (                                          <TreeNode title={org.name} key={org.id} >                                             {                                                 subOrg( org.id )                                             }                                         </TreeNode>                                                             );                             }   )                     };                 return subOrg();             } )()         }       </DirectoryTree>                 这个是我写的树结构，现在想要实现：点击一个按钮，就在当前节点下创建或者删除一个新的子节点。