From 3cacaacf88964a55bb2ed05c03967eeeaaef89f2 Mon Sep 17 00:00:00 2001
From: Jorge Canizales <jcanizales@google.com>
Date: Mon, 29 Jun 2015 16:45:46 -0700
Subject: [PATCH] Minor: add TODO to improve an error message.

---
 src/objective-c/ProtoRPC/ProtoRPC.m | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/objective-c/ProtoRPC/ProtoRPC.m b/src/objective-c/ProtoRPC/ProtoRPC.m
index 517c4812a78..4da646d7b45 100644
--- a/src/objective-c/ProtoRPC/ProtoRPC.m
+++ b/src/objective-c/ProtoRPC/ProtoRPC.m
@@ -66,6 +66,8 @@
   // A writer that serializes the proto messages to send.
   id<GRXWriter> bytesWriter =
       [[[GRXWriter alloc] initWithWriter:requestsWriter] map:^id(GPBMessage *proto) {
+        // TODO(jcanizales): Fail with an understandable error message if the requestsWriter isn't
+        // sending GPBMessages.
         return [proto data];
       }];
   if ((self = [super initWithHost:host method:method requestsWriter:bytesWriter])) {