switch ( eDerivedStructuralFeatureID( eFeature ) )
switch ( featureID )
	public void eUnset( EStructuralFeature eFeature )	{		switch ( eDerivedStructuralFeatureID( eFeature ) )		{			case AttributePackage.URL_VALUE__BASE_URL :				setBaseUrl( BASE_URL_EDEFAULT );				return;			case AttributePackage.URL_VALUE__TARGET :				setTarget( TARGET_EDEFAULT );				return;			case AttributePackage.URL_VALUE__BASE_PARAMETER_NAME :				setBaseParameterName( BASE_PARAMETER_NAME_EDEFAULT );				return;			case AttributePackage.URL_VALUE__VALUE_PARAMETER_NAME :				setValueParameterName( VALUE_PARAMETER_NAME_EDEFAULT );				return;			case AttributePackage.URL_VALUE__SERIES_PARAMETER_NAME :				setSeriesParameterName( SERIES_PARAMETER_NAME_EDEFAULT );				return;		}		eDynamicUnset( eFeature );	}