@Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    PhotoAlbum that = (PhotoAlbum) o;
    return Objects.equals(id, that.id);
  }
The {@code id} is used to associate photos with this album. *
portability-types-common/src/main/java/org/datatransferproject/types/common/models/photos/PhotoAlbum.java