NativeMethodHandler<T>.instance constructor

NativeMethodHandler<T>.instance(Future handler(T), [ T? asFunc(dynamic)? ])

Implementation

factory NativeMethodHandler.instance(Future Function(T) handler,
        [T? Function(dynamic)? asFunc]) =>
    NativeMethodHandler._(
      asFunc: asFunc,
      handler: (value) => value != null
          ? handler(value)
          : Future.error("no such arguments type error"),
    );