code: public static void exports(Media media, Collection<Media> levels, Media sheetsMedia, Media groupsMedia)
      {
          Check.notNull(media);
          Check.notNull(levels);
          Check.notNull(sheetsMedia);
          Check.notNull(groupsMedia);
  
          final TransitionsExtractor extractor = new TransitionsExtractorImpl();
          final Map<Transition, Collection<TileRef>> transitions = extractor.getTransitions(levels,
                                                                                            sheetsMedia,
                                                                                            groupsMedia);
          exports(media, transitions);
      }
docs: Export all transitions to media.
  
  @param media The export media output (must not be <code>null</code>).
  @param levels The level rips used (must not be <code>null</code>).
  @param sheetsMedia The sheets media (must not be <code>null</code>).
  @param groupsMedia The groups media (must not be <code>null</code>).
  @throws LionEngineException If error on export.