cmake official tutorial source on github

For official tutorial cmake, where do you find the complete source?
I remember that I found it on github but no more. Web search reveals several github link but those are not same as the examples used in this tutorial.

The first paragraph of the Introduction says:

The tutorial documentation and source code for examples can be found in the Help/guide/tutorial directory of the CMake source code tree.

yes that is where i foudn it. thanks.,