code: private function fetchCollectionFromApi(array $resourceIds, string $type, string $locale = null): array
      {
          $query = (new Query())
              ->where('sys.id[in]', $resourceIds)
          ;
  
          if ('Asset' === $type || 'Entry' === $type) {
              $query->setLocale($locale);
          }
  
          switch ($type) {
              case 'Asset':
                  return $this->client->getAssets($query)->getItems();
              case 'ContentType':
                  return $this->client->getContentTypes($query)->getItems();
              case 'Entry':
                  return $this->client->getEntries($query)->getItems();
              case 'Environment':
                  return [$this->client->getEnvironment()];
              case 'Space':
                  return [$this->client->getSpace()];
              default:
                  throw new \InvalidArgumentException(\sprintf(
                      'Trying to resolve link for unknown type "%s".',
                      $type
                  ));
          }
      }
docs: Actually make the relevant API calls.
  
  @param string[]    $resourceIds
  @param string      $type
  @param string|null $locale
  
  @return ResourceInterface[]