src/vs/workbench/contrib/extensions/browser/extensionsActions.ts/ExtensionActionWithDropdownActionViewItem/updateClass
class ExtensionActionWithDropdownActionViewItem:	override updateClass(): void {
		super.updateClass();
		if (this.element && this.dropdownMenuActionViewItem && this.dropdownMenuActionViewItem.element) {
			this.element.classList.toggle('empty', (<ActionWithDropDownAction>this._action).menuActions.length === 0);
			this.dropdownMenuActionViewItem.element.classList.toggle('hide', (<ActionWithDropDownAction>this._action).menuActions.length === 0);
		}
	}