Like a faking library, but oriented towards dynamic modification at runtime.
To get started simply create a new Implementer<T>(), T being the type you want to implement. Alternatively, you can use the non-generic version new Implementer(Type type).
ClassImpl can be installed via the Unity Package Manager. To do so, add the following to the dependencies array in your manifest.json:
"com.pipe01.classimpl": "https://github.com/pipe01/classimpl.git#unity"