switch ( eDerivedStructuralFeatureID( eFeature ) )
switch ( featureID )
	public Object eGet( EStructuralFeature eFeature, boolean resolve )	{		switch ( eDerivedStructuralFeatureID( eFeature ) )		{			case DataPackage.BASE_SAMPLE_DATA__DATA_SET_REPRESENTATION :				return getDataSetRepresentation( );		}		return eDynamicGet( eFeature, resolve );	}