docs: private void checkCoding(List<ValidationMessage> errors, String path, WrapperElement focus, Coding fixed) {
      checkFixedValue(errors, path + ".system", focus.getNamedChild("system"), fixed.getSystemElement(), "system");
      checkFixedValue(errors, path + ".code", focus.getNamedChild("code"), fixed.getCodeElement(), "code");
      checkFixedValue(errors, path + ".display", focus.getNamedChild("display"), fixed.getDisplayElement(), "display");
      checkFixedValue(errors, path + ".userSelected", focus.getNamedChild("userSelected"), fixed.getUserSelectedElement(), "userSelected");
    }