docs: boolean isAuthException(SQLException x) {
          return x instanceof SQLInvalidAuthorizationSpecException
                 || 1004 == x.getErrorCode() // default username feature not supported; logon denied
                 || 1005 == x.getErrorCode() // null password given; logon denied
                 || 1017 == x.getErrorCode(); // invalid username/password; logon denied
      }