}
GetPresentationModelCommand cmd = new GetPresentationModelCommand();
cmd.setPmId(requestedPmId);
OnFinishedHandler callBack = new OnFinishedHandlerAdapter() {
@Override
public void onFinished(List<ClientPresentationModel> presentationModels) {
ClientPresentationModel theOnlyOne = presentationModels.get(0);
assert theOnlyOne.getId().equals(requestedPmId); // sanity check
withPmHandler.onFinished(theOnlyOne);