docs: public Connection getConnection(String user, String password) throws SQLException {
      // If this is for the default user/password, use a pooled connection
      if (user == null || (user.equals(getUser()) && ((password == null && getPassword() == null)
          || (password != null && password.equals(getPassword()))))) {
        return getConnection();
      }
      // Otherwise, use a non-pooled connection
      if (!initialized) {
        initialize();
      }
      return super.getConnection(user, password);
    }