{
    switch (featureID)
    {
      case MappingPackage.MAPPING_ROOT__OUTPUT_READ_ONLY:
        setOutputReadOnly(OUTPUT_READ_ONLY_EDEFAULT);
        return;
      case MappingPackage.MAPPING_ROOT__TOP_TO_BOTTOM:
        setTopToBottom(TOP_TO_BOTTOM_EDEFAULT);
        return;
      case MappingPackage.MAPPING_ROOT__COMMAND_STACK:
        setCommandStack(COMMAND_STACK_EDEFAULT);
        return;
    }
    super.eUnset(featureID);
  }