/**
  * Adds a resolver to handle cached images for the given filter.
  *
  * @param string            $filter
  * @param ResolverInterface $resolver
  */
 public function addResolver($filter, ResolverInterface $resolver)
 {
     $this->resolvers[$filter] = $resolver;
     if ($resolver instanceof CacheManagerAwareInterface) {
         $resolver->setCacheManager($this);
     }
 }
 /**
  * {@inheritDoc}
  */
 public function remove(array $paths, array $filters)
 {
     return $this->resolver->remove($paths, $filters);
 }