src/vs/workbench/api/common/extHostWebview.ts/ExtHostWebviews/constructor
class ExtHostWebviews:	constructor(
		mainContext: extHostProtocol.IMainContext,
		private readonly remoteInfo: WebviewRemoteInfo,
		private readonly workspace: IExtHostWorkspace | undefined,
		private readonly _logService: ILogService,
		private readonly _deprecationService: IExtHostApiDeprecationService,
	) {
		this._webviewProxy = mainContext.getProxy(extHostProtocol.MainContext.MainThreadWebviews);
	}