@Override
  public Map<String, Integer> getCounts() {
    return new ImmutableMap.Builder<String, Integer>()
        .put(ALBUMS_COUNT_DATA_NAME, albums.size())
        .put(PHOTOS_COUNT_DATA_NAME, photos.size())
        .put(VIDEOS_COUNT_DATA_NAME, videos.size())
        .build();
  }
Extracts a new VideosContainerResource from the relevant matching fields in a given
MediaContainerResource.
portability-types-common/src/main/java/org/datatransferproject/types/common/models/media/MediaContainerResource.java