public boolean eIsSet( EStructuralFeature eFeature )
public boolean eIsSet( int featureID )
	public boolean eIsSet( EStructuralFeature eFeature )	{		switch ( eDerivedStructuralFeatureID( eFeature ) )		{			case ComponentPackage.CURVE_FITTING__LINE_ATTRIBUTES :				return lineAttributes != null;			case ComponentPackage.CURVE_FITTING__LABEL :				return label != null;			case ComponentPackage.CURVE_FITTING__LABEL_ANCHOR :				return isSetLabelAnchor( );		}		return eDynamicIsSet( eFeature );	}