public static string GetGroupAssignmentHistoryItem(RestCommand command, int groupAssignmentHistoryID)
        {
            GroupAssignmentHistoryItem groupAssignmentHistoryItem = GroupAssignmentHistory.GetGroupAssignmentHistoryItem(command.LoginUser, groupAssignmentHistoryID);

            if (groupAssignmentHistoryItem.OrganizationID != command.Organization.OrganizationID)
            {
                throw new RestException(HttpStatusCode.Unauthorized);
            }
            return(groupAssignmentHistoryItem.GetXml("GroupAssignmentHistoryItem", true));
        }
        public static string GetGroupAssignmentHistory(RestCommand command)
        {
            GroupAssignmentHistory groupAssignmentHistory = new GroupAssignmentHistory(command.LoginUser);

            groupAssignmentHistory.LoadByOrganizationID(command.Organization.OrganizationID);

            if (command.Format == RestFormat.XML)
            {
                return(groupAssignmentHistory.GetXml("GroupAssignmentHistory", "GroupAssignmentHistoryItem", true, command.Filters));
            }
            else
            {
                throw new RestException(HttpStatusCode.BadRequest, "Invalid data format");
            }
        }