Interface ExtensionQuery<UOutput>

interface ExtensionQuery<UOutput extends ExtensionDataRef> {
    get instance(): AppNodeInstance;
    get node(): AppNode;
    get<TId extends string>(
        ref: ExtensionDataRef<any, TId, any>,
    ): UOutput extends ExtensionDataRef<IData, TId, IConfig>
        ? IConfig["optional"] extends true ? IData | undefined : IData
        : never;
}