src/vs/workbench/contrib/comments/browser/commentNode.ts/CommentNode/actionViewItemProvider
class CommentNode:	actionViewItemProvider(action: Action) {
		let options = {};
		if (action.id === ToggleReactionsAction.ID) {
			options = { label: false, icon: true };
		} else {
			options = { label: false, icon: true };
		}

		if (action.id === ReactionAction.ID) {
			let item = new ReactionActionViewItem(action);
			return item;
		} else if (action instanceof MenuItemAction) {
			return this.instantiationService.createInstance(MenuEntryActionViewItem, action, undefined);
		} else if (action instanceof SubmenuItemAction) {
			return this.instantiationService.createInstance(SubmenuEntryActionViewItem, action, undefined);
		} else {
			let item = new ActionViewItem({}, action, options);
			return item;
		}
	}