switch ( eDerivedStructuralFeatureID( eFeature ) )
switch ( featureID )
	public Object eGet( EStructuralFeature eFeature, boolean resolve )	{		switch ( eDerivedStructuralFeatureID( eFeature ) )		{			case DataPackage.SAMPLE_DATA__BASE_SAMPLE_DATA :				return getBaseSampleData( );			case DataPackage.SAMPLE_DATA__ORTHOGONAL_SAMPLE_DATA :				return getOrthogonalSampleData( );			case DataPackage.SAMPLE_DATA__ANCILLARY_SAMPLE_DATA :				return getAncillarySampleData( );		}		return eDynamicGet( eFeature, resolve );	}