code: public static function getConfigSchema()
      {
          $schema = parent::getConfigSchema();
          $out = [];
          foreach ($schema as $key => $field) {
              if ($field['name'] === 'key' || $field['name'] === 'parameters') {
                  $out[] = $schema[$key];
              }
          }
  
          return $out;
      }
docs: {@inheritdoc}