/// <summary>
/// Requests for the server side contact list.
/// </summary>
/// <param name="sess">the session object</param>
/// <param name="modificationDate">the last client side modification date</param>
/// <param name="isLocalTime">Determines if the given modification time is in the local or universal time format</param>
/// <param name="itemCount">the total item count at the client side</param>
public static void SendContactListCheckout(Session sess, DateTime modificationDate, bool isLocalTime,
ushort itemCount)
{
SNACHeader sh = new SNACHeader();
sh.FamilyServiceID = (ushort)SNACFamily.SSIService;
sh.FamilySubtypeID = (ushort)SSIService.ContactListCheckout;
ByteStream stream = new ByteStream();
uint modDateValue = ByteStream.ConvertDateTimeToUint(modificationDate, isLocalTime);
stream.WriteUint(modDateValue);
stream.WriteUshort(itemCount);
SNACFunctions.BuildFLAP(Marshal.BuildDataPacket(sess, sh, stream));
}