Codegen GRXWriter* instead of id<GRXWriter>
diff --git a/src/compiler/objective_c_generator.cc b/src/compiler/objective_c_generator.cc
index 2a74a3b..711d0d5 100644
--- a/src/compiler/objective_c_generator.cc
+++ b/src/compiler/objective_c_generator.cc
@@ -67,7 +67,7 @@
printer->Print(vars, "- ($return_type$)$method_name$With");
if (method->client_streaming()) {
- printer->Print("RequestsWriter:(id<GRXWriter>)requestWriter");
+ printer->Print("RequestsWriter:(GRXWriter *)requestWriter");
} else {
printer->Print(vars, "Request:($request_class$ *)request");
}