src/vs/workbench/contrib/comments/browser/commentService.ts/CommentService/constructor
class CommentService:	constructor(
		@IInstantiationService protected readonly instantiationService: IInstantiationService,
		@IWorkbenchLayoutService private readonly layoutService: IWorkbenchLayoutService,
		@IConfigurationService private readonly configurationService: IConfigurationService,
		@IContextKeyService readonly contextKeyService: IContextKeyService
	) {
		super();
		this._handleConfiguration();
		this._handleZenMode();
		this._workspaceHasCommenting = WorkspaceHasCommenting.bindTo(contextKeyService);
	}