invert

Inverts the given transform.

If this 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 this is not `NULL` before calling this function.

This function consumes this. Use [method@Gsk.Transform.ref] first if you want to keep it around.

Parameters:

this	transform to invert

Returns:

The inverted transform