{
    switch (featureID)
    {
      case MappingPackage.FUNCTION_NAME_PAIR__IN2OUT:
        return IN2OUT_EDEFAULT == null ? in2out != null : !IN2OUT_EDEFAULT.equals(in2out);
      case MappingPackage.FUNCTION_NAME_PAIR__OUT2IN:
        return OUT2IN_EDEFAULT == null ? out2in != null : !OUT2IN_EDEFAULT.equals(out2in);
    }
    return super.eIsSet(featureID);
  }