public virtual IList FindUsersByGroupAndRole(String groupId, String role, Relations relations) { IList users = null; DbSession dbSession = null; try { dbSession = OpenSession(); users = implementation.FindUsersByGroupAndRole(groupId, role, relations, dbSession); } catch (Exception t) { log.Error("error when finding users by group id " + groupId + " and role " + role, t); } return(users); }