/** All the completed wars related with particular user with "maximum" recent items.
*
* 获取某用户已完成战役列表（最近的maximum个）。返回：一组War的列表
*
*
* Return: Array of War Object
*/
private static byte[] GetUserSeiges(Credential credential, string email, BigInteger maximum)
{
User user = RW.FindUser(email);
BigInteger tot = RW.NumUserSiegeHistory(user);
BigInteger num = (tot > maximum) ? maximum : tot;
return(NuTP.RespDataWithCode(NuTP.SysDom, NuTP.Code.ServiceUnavailable));
}