partial         void CopyExtraPropertiesToClone(ExternalSystemComment clone, bool includeLocalProperties);
 public ExternalSystemComment Clone(bool includeLocalProperties)
 {
     var c = new ExternalSystemComment
             {
                 Body = Body,
                 CreatedAt = CreatedAt,
                 CreatedBy = CreatedBy,
                 ExternalSystemLinkId = ExternalSystemLinkId,
                 Id = Id,
                 TicketId = TicketId,
             };
     CopyExtraPropertiesToClone(c, includeLocalProperties);
     return c;
 }