Compilation of Creo Toolkit Features

There is an example in Object toolkit which can be compiled and should generate C++ code to generate Creo Object Toolkit in C++. Everything is fine except, the source code for CreateElem class is missing. The code which should generate a feature is here: otk\otk_cpp\otk_examples\otk_examples_feat\OTKXWriteFeatAsCxx , it depends on OTKXSaveFeatCxx in this directory: otk\otk_cpp\otk_examples\includes . The C++ code for CreateElem class seem to be missing. Where I can find it?

I tried also to compile it against otk_cpp.lib, without C++ code of CreateElem. But I failed. How can I make it run to e able to create features?