src/vs/workbench/contrib/files/browser/views/explorerView.ts/ExplorerView/contributedContextMenu
class ExplorerView:	@memoize private get contributedContextMenu(): IMenu {
		const contributedContextMenu = this.menuService.createMenu(MenuId.ExplorerContext, this.tree.contextKeyService);
		this._register(contributedContextMenu);
		return contributedContextMenu;
	}