text: import { NgModule } from '@angular/core';
  import { BrowserModule } from '@angular/platform-browser';
  import { AppComponent } from './app.component';
  import { TreeViewDemo } from './treeview/tree-view-demo';
  import { TreeView } from './treeview/tree-view';
  export class AppModule {
  }
  /** @nocollapse */
  AppModule.decorators = [
      { type: NgModule, args: [{
                  imports: [BrowserModule],
                  declarations: [AppComponent, TreeViewDemo, TreeView],
                  bootstrap: [AppComponent]
              },] },
  ];
  