DangerousUnitTestShims

This must only be used by Glok's unit tests.

There's a problem using internal in a multi-platform project - it seems there's no way to use these internal classes/methods from a unit test.

As a workaround, the shim functions here are public, and call the real internal functions (i.e. they break the protection of the internal keyword).

Note, these methods are deliberately cumbersome to use, so that they aren't accidentally used by application developers.