/// <summary>
        /// Return the HashCode of this object.
        /// </summary>
        /// <returns>The HashCode of this object.</returns>
        public override Int32 GetHashCode()
        {
            unchecked
            {
                return((TransactionId.HasValue
                            ? TransactionId.GetHashCode() * 19
                            : 0) ^

                       PartnerId.GetHashCode() * 17 ^
                       OperatorId.GetHashCode() * 13 ^
                       ChargingStationId.GetHashCode() * 11 ^
                       StatusEventDate.GetHashCode() * 7 ^
                       AvailabilityStatus.GetHashCode() * 5 ^

                       (AvailabilityStatusUntil.HasValue
                            ? AvailabilityStatusUntil.GetHashCode() * 3
                            : 0) ^

                       (AvailabilityStatusComment.IsNeitherNullNorEmpty()
                            ? AvailabilityStatusComment.GetHashCode()
                            : 0));
            }
        }