ToString() public abstract method

public abstract ToString ( ) : string
return string
            /// <summary>
            ///     Check that the user corresponding to the given id is an authorized user.
            /// </summary>
            /// <param name="idOwner">Id of a user</param>
            /// <seealso cref="checkAcl"/>
            private void checkUser(IdentityReference idOwner)
            {
                log.Debug("Owner identity: " + idOwner);

                if ((idOwner != idSystem) && (idOwner != idAdmin) && !idOwner.ToString().StartsWith("S-1-5-80"))
                    throw new UnauthorizedAccessException("Users should not be owner of the configuration file.");
            }