From b0ae82fe42de06b7f8fd47d2596362064ef34bbe Mon Sep 17 00:00:00 2001
From: yang-g <yangg@google.com>
Date: Tue, 17 Mar 2020 10:55:48 -0700
Subject: [PATCH] Add comment for error case

---
 include/grpcpp/server_builder_impl.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/grpcpp/server_builder_impl.h b/include/grpcpp/server_builder_impl.h
index 294a798bb9c..171f1ac6c84 100644
--- a/include/grpcpp/server_builder_impl.h
+++ b/include/grpcpp/server_builder_impl.h
@@ -107,6 +107,8 @@ class ServerBuilder {
   ///     traffic (via AddListeningPort)
   ///  3. [for async api only] completion queues have been added via
   ///     AddCompletionQueue
+  ///
+  ///  Will return a nullptr on errors.
   virtual std::unique_ptr<grpc::Server> BuildAndStart();
 
   /// Register a service. This call does not take ownership of the service.