Use of namespace "te" about documentation

On the tracktion documentation, namely the example projects that were last updated 9 months ago, it is used the namespace “te”, however when I installed the code in my own project I found that that namespace was never defined in the code and I had to use “tracktion::” instead.

I would like to understand why.

It’s a shortcut that saves typing. At the top of the common.h in Examples:

namespace te = tracktion;

so simple. Thanks for the fast reply