switch ( eDerivedStructuralFeatureID( eFeature ) )
switch ( featureID )
	public void eUnset( EStructuralFeature eFeature )	{		switch ( eDerivedStructuralFeatureID( eFeature ) )		{			case DataPackage.ORTHOGONAL_SAMPLE_DATA__DATA_SET_REPRESENTATION :				setDataSetRepresentation( DATA_SET_REPRESENTATION_EDEFAULT );				return;			case DataPackage.ORTHOGONAL_SAMPLE_DATA__SERIES_DEFINITION_INDEX :				unsetSeriesDefinitionIndex( );				return;		}		eDynamicUnset( eFeature );	}