src/vs/workbench/contrib/comments/browser/reactionsAction.ts/ToggleReactionsAction/constructor
class ToggleReactionsAction:	constructor(toggleDropdownMenu: () => void, title?: string) {
		super(ToggleReactionsAction.ID, title || nls.localize('pickReactions', "Pick Reactions..."), 'toggle-reactions', true);
		this.toggleDropdownMenu = toggleDropdownMenu;
	}