getSourcePrivateBasePath example

    unset($connection_options['isolation_level']);
    $edit = [
      $driver => $connection_options,
      'source_private_file_path' => $this->getSourceBasePath(),
      'version' => $version,
    ];
    if ($version == 6) {
      $edit['d6_source_base_path'] = $this->getSourceBasePath();
    }
    else {
      $edit['source_base_path'] = $this->getSourceBasePath();
      $edit['source_private_file_path'] = $this->getSourcePrivateBasePath();
    }
    if (count($drivers) !== 1) {
      $edit['driver'] = $driver;
    }
    return $edit;
  }

  /** * Asserts that a migrated user can login. */
  public function assertUserLogIn($uid, $pass) {