Sets the contents of a g_type_object derived Value to
v_object and takes over the ownership of the caller’s reference to v_object; the caller doesn’t have to
unref it any more (i.
e. the reference count of the object is not increased).
If you want the Value to hold its own reference to v_object, use
set_object instead.
| this |
a valid Value of g_type_object derived type |
| v_object |
object value to be set |