1 files changed, 13 insertions, 1 deletions
diff --git a/src/cpp/client/generic_stub.cc b/src/cpp/client/generic_stub.cc
index 67ef46bebe..87902b26f0 100644
--- a/src/cpp/client/generic_stub.cc
+++ b/src/cpp/client/generic_stub.cc
@@ -16,9 +16,11 @@
  *
  */
 
-#include <grpcpp/generic/generic_stub.h>
+#include <functional>
 
+#include <grpcpp/generic/generic_stub.h>
 #include <grpcpp/impl/rpc_method.h>
+#include <grpcpp/support/client_callback.h>
 
 namespace grpc {
 
@@ -60,4 +62,14 @@ std::unique_ptr<GenericClientAsyncResponseReader> GenericStub::PrepareUnaryCall(
           context, request, false));
 }
 
+void GenericStub::experimental_type::UnaryCall(
+    ClientContext* context, const grpc::string& method,
+    const ByteBuffer* request, ByteBuffer* response,
+    std::function<void(Status)> on_completion) {
+  internal::CallbackUnaryCall(
+      stub_->channel_.get(),
+      internal::RpcMethod(method.c_str(), internal::RpcMethod::NORMAL_RPC),
+      context, request, response, std::move(on_completion));
+}
+
 }  // namespace grpc