Inverts the given transform.
If @self is not invertible, %NULL is returned. Note that inverting %NULL also returns %NULL, which is the correct inverse of %NULL. If you need to differentiate between those cases, you should check @self is not %NULL before calling this function.
The inverted transform or %NULL if the transform cannot be inverted.
See Implementation
Inverts the given transform.
If @self is not invertible, %NULL is returned. Note that inverting %NULL also returns %NULL, which is the correct inverse of %NULL. If you need to differentiate between those cases, you should check @self is not %NULL before calling this function.