src/vs/workbench/services/extensions/common/extensionHostManager.ts/LazyStartExtensionHostManager/constructor
class LazyStartExtensionHostManager:	constructor(
		public readonly extensionHostId: string,
		extensionHost: IExtensionHost,
		private readonly _internalExtensionService: IInternalExtensionService,
		@IInstantiationService private readonly _instantiationService: IInstantiationService,
		@ILogService private readonly _logService: ILogService,
	) {
		super();
		this._extensionHost = extensionHost;
		this.onDidExit = extensionHost.onExit;
		this._startCalled = new Barrier();
		this._actual = null;
		this._lazyStartExtensions = null;
	}