protected AbstractKeyedStateBackend <TKey> RestoreKeyedBackend <TKey>( TypeSerializer <TKey> keySerializer, IKeyedStateHandle state, IEnvironment env) => RestoreKeyedBackend( keySerializer, 10, new KeyGroupRange(0, 9), SingletonList <IKeyedStateHandle> .Instance, env);
protected AbstractKeyedStateBackend <TKey> RestoreKeyedBackend <TKey>(TypeSerializer <TKey> keySerializer, IKeyedStateHandle state) => RestoreKeyedBackend(keySerializer, state, new DummyEnvironment());