BloggingSystem.Services.Validators.UserValidator.ValidateSessionKey C# (CSharp) Метод

        public static void ValidateSessionKey(string sessionKey)
        {
            if (sessionKey == null)
            {
                throw new ArgumentNullException("sessionKey", "Session key cannot be null!");
            }

            if (sessionKey.Length != SessionKeyLength)
            {
                throw new ArgumentOutOfRangeException("sessionKey", "Invalid session key!");
            }

            if (sessionKey.Any(ch => !ValidSessionKeyChars.Contains(ch)))
            {
                throw new ArgumentOutOfRangeException("sessionKey", "Session key contains invalid characters!");
            }
        }