Disconnects a handler from an instance so it will not be called during
any future or currently ongoing emissions of the signal it has been
connected to. The handler_id becomes invalid and may be reused.
The handler_id has to be a valid signal handler id, connected to a
signal of instance.
Disconnects a handler from an instance so it will not be called during any future or currently ongoing emissions of the signal it has been connected to. The handler_id becomes invalid and may be reused. The handler_id has to be a valid signal handler id, connected to a signal of instance.