code: public function resolve($key)
      {
          if (!($this->getAdapter() instanceof ResolverInterface)) {
              throw new \LogicException('This adapter can not resolve keys');
          }
  
          return $this->getAdapter()->resolve($key);
      }
docs: Gets the URL of the given key.
  
  @param string $key
  
  @return string The URL.
  @author Kévin Gomez <contact@kevingomez.fr>