code: public function generateKey(string $type, string $id, array $options = []): string
      {
          $locale = \strtr($options['locale'] ?? '__ALL__', [
              '-' => '_',
              '*' => '__ALL__',
          ]);
  
          return 'contentful.'
              .$this->api
              .'.'
              .$this->spaceId
              .'.'
              .$this->environmentId
              .'.'
              .$type
              .'.'
              .$this->sanitize($id)
              .'.'
              .$locale;
      }
docs: {@inheritdoc}