Removes a reference added with g_object_add_toggle_ref(). The reference count of the object is decreased by one. Since 2.8
a function to call when this reference is the last reference to the object, or is no longer the last reference.
data to pass to notify
See Implementation
Removes a reference added with g_object_add_toggle_ref(). The reference count of the object is decreased by one. Since 2.8