public Task <bool> PExpireAtAsync(string key, long timestamp) => MultiAsync(KeyCommands.PExpireAt(key, timestamp));
public Task <bool> PExpireAtAsync(string key, DateTime date) => MultiAsync(KeyCommands.PExpireAt(key, date.GetUnixTime()));
public bool PExpireAt(string key, long timestamp) => Multi(KeyCommands.PExpireAt(key, timestamp));
public bool PExpireAt(string key, DateTime date) => Multi(KeyCommands.PExpireAt(key, date.GetUnixTime()));