code: @Override
      public Optional<Identification> getIdentification(String id) {
          return Optional.ofNullable(registered.get(id))
                  .map(IdentificationImpl::createIdentification);
      }
docs: If a class has registered with an Identifiable interface you can receive an Identification Instance describing
  the class by providing his ID.
  @param id the ID of the registered Identifiable
  @return an Identification Instance or null if not registered