+namespace internal {
+
+struct ClockClassTypeDescr
+{
+ using Const = ConstClockClass;
+ using NonConst = ClockClass;
+};
+
+template <>
+struct TypeDescr<ClockClass> : public ClockClassTypeDescr
+{
+};
+
+template <>
+struct TypeDescr<ConstClockClass> : public ClockClassTypeDescr
+{
+};
+
+} /* namespace internal */