private function getBaseTables() {
    $base_tables = [];

    /** @var array[] $wizard_plugins */
    $wizard_plugins = $this->viewsWizardManager->getDefinitions();
    foreach ($wizard_plugins as $wizard) {
      if (!array_key_exists('base_table', $wizard)) {
        continue;
      }
      $base_tables[$wizard['base_table']] = (string) $wizard['title'];
    }

    return $base_tables;
  }