code: @Override
    public void onContainerStopped(final ContainerId containerId) {
      final boolean hasContainer = this.containers.hasContainer(containerId.toString());
      if (hasContainer) {
        this.reefEventHandlers.onResourceStatus(
            ResourceStatusEventImpl.newBuilder()
               .setIdentifier(containerId.toString())
               .setState(State.DONE)
               .build());
      }
    }
docs: NM Callback: NM reports stop of a container.
  @param containerId ID of a container stopped.