src/vs/base/browser/ui/actionbar/actionbar.ts/ActionBar/clear
class ActionBar:	clear(): void {
		if (this.isEmpty()) {
			return;
		}

		this.viewItems = dispose(this.viewItems);
		this.viewItemDisposables.clearAndDisposeAll();
		DOM.clearNode(this.actionsList);
		this.refreshRole();
	}