TD: modernize C++: replace 'typedef' with 'using'

src/Mod/Test/Gui/UnitTestPy.h

@@ -60,7 +60,7 @@ public:
     Py::Object clearUnitTests   (const Py::Tuple&);
 
 private:
-    typedef PyObject* (*method_varargs_handler)(PyObject *_self, PyObject *_args);
+    using method_varargs_handler = PyObject* (*)(PyObject *_self, PyObject *_args);
     static method_varargs_handler pycxx_handler;
     static PyObject *method_varargs_ext_handler(PyObject *_self, PyObject *_args);
 };