src/vs/base/browser/ui/dropdown/dropdownActionViewItem.ts/DropdownMenuActionViewItem/constructor
class DropdownMenuActionViewItem:	constructor(
		action: IAction,
		menuActionsOrProvider: readonly IAction[] | IActionProvider,
		contextMenuProvider: IContextMenuProvider,
		options: IDropdownMenuActionViewItemOptions = Object.create(null)
	) {
		super(null, action, options);

		this.menuActionsOrProvider = menuActionsOrProvider;
		this.contextMenuProvider = contextMenuProvider;
		this.options = options;

		if (this.options.actionRunner) {
			this.actionRunner = this.options.actionRunner;
		}
	}