unregisterPlugin method
Unregisters every contribution owned by pluginId.
Implementation
bool unregisterPlugin(String pluginId) {
final originalLength = _registrations.length;
_registrations.removeWhere(
(registration) => registration.pluginId == pluginId,
);
if (_registrations.length == originalLength) {
return false;
}
_notifyListeners();
return true;
}