Checks if a mini-object is writable. If not, a writable copy is made and returned. This gives away the reference to the original mini object, and returns a reference to the new object. MT safe
a mini-object (possibly the same pointer) that is writable. [transfer full]
See Implementation
Checks if a mini-object is writable. If not, a writable copy is made and returned. This gives away the reference to the original mini object, and returns a reference to the new object. MT safe