Update by review
diff --git a/include/grpcpp/impl/codegen/time.h b/include/grpcpp/impl/codegen/time.h
index 80dfbe8..a08e9cb 100644
--- a/include/grpcpp/impl/codegen/time.h
+++ b/include/grpcpp/impl/codegen/time.h
@@ -39,6 +39,10 @@
template <typename T>
class TimePoint {
public:
+ // If you see the error with methods below, you may need either
+ // i) using the existing types having a conversion class such as
+ // gpr_timespec and std::chrono::system_clock::time_point or
+ // ii) writing a new TimePoint<YourType> to address your case.
TimePoint(const T& /*time*/) = delete;
gpr_timespec raw_time() = delete;
};