* @return A {@link ListenableFuture} which will return either a result structure, or report a subclass
* of {@link DOMRpcException} reporting a transport error.
*/
- // FIXME: 5.0.0: do not allow null input
+ // FIXME: 6.0.0: do not allow null input
@NonNull ListenableFuture<DOMRpcResult> invokeRpc(@NonNull SchemaPath type, @Nullable NormalizedNode<?, ?> input);
/**