How to use

getEnumFactory

method

in

org.hl7.fhir.dstu3.model.Enumeration

private static <T extends Enum<?>> String extractSystem(Enumeration<T> theBoundCode) {
  if (theBoundCode.getValue() != null) {
    return theBoundCode.getEnumFactory().toSystem(theBoundCode.getValue());
  }
  return null;
}

public String toSystem() {
  return getEnumFactory().toSystem(getValue());
}