src/vs/workbench/contrib/comments/browser/commentNode.ts/CommentNode/createToolbar
class CommentNode:	private createToolbar() {
		this.toolbar = new ToolBar(this._actionsToolbarContainer, this.contextMenuService, {
			actionViewItemProvider: action => {
				if (action.id === ToggleReactionsAction.ID) {
					return new DropdownMenuActionViewItem(
						action,
						(<ToggleReactionsAction>action).menuActions,
						this.contextMenuService,
						{
							actionViewItemProvider: action => this.actionViewItemProvider(action as Action),
							actionRunner: this.actionRunner,
							classNames: ['toolbar-toggle-pickReactions', ...Codicon.reactions.classNamesArray],
							anchorAlignmentProvider: () => AnchorAlignment.RIGHT
						}
					);
				}
				return this.actionViewItemProvider(action as Action);
			},
			orientation: ActionsOrientation.HORIZONTAL
		});

		this.toolbar.context = this.commentNodeContext;

		this.registerActionBarListeners(this._actionsToolbarContainer);
		this._register(this.toolbar);
	}