src/vs/editor/contrib/gotoSymbol/symbolNavigation.ts/SymbolNavigationService/constructor
class SymbolNavigationService:	constructor(
		@IContextKeyService contextKeyService: IContextKeyService,
		@ICodeEditorService private readonly _editorService: ICodeEditorService,
		@INotificationService private readonly _notificationService: INotificationService,
		@IKeybindingService private readonly _keybindingService: IKeybindingService,
	) {
		this._ctxHasSymbols = ctxHasSymbols.bindTo(contextKeyService);
	}