@Override
  public <T> void registerService(Class<T> type, T service) {
    baseExtensionContext.registerService(type, service);
  }
An {@link ExtensionContext} that is able to override registered services
to provide job/service specific values.
portability-api-launcher/src/main/java/org/datatransferproject/api/launcher/DelegatingExtensionContext.java