How to use ca.uhn.fhir.to

final TesterConfig retVal = new TesterConfig();
retVal.addServer().withId("Test-Server").withFhirVersion(FhirVersionEnum.DSTU2)
    .withBaseUrl(ContextListener.serverAddress).withName("FHIR Server Test Front End");
  retVal.setClientFactory(clientFactory);

TesterConfig retVal = new TesterConfig();
retVal
  .addServer()
    .withId("home")
    .withFhirVersion(ContextHolder.getCtx().getVersion().getVersion())
    .withBaseUrl("${serverBase}" + ContextHolder.getPath())
    .withName("Local Tester");
  .addServer()
    .withId("hapi")
    .withFhirVersion(FhirVersionEnum.DSTU2)
    .withBaseUrl("http://fhirtest.uhn.ca/baseDstu2")
    .withName("Public HAPI Test Server");
return retVal;