public boolean eIsSet( EStructuralFeature eFeature )
public boolean eIsSet( int featureID )
	public boolean eIsSet( EStructuralFeature eFeature )	{		switch ( eDerivedStructuralFeatureID( eFeature ) )		{			case AttributePackage.CALL_BACK_VALUE__IDENTIFIER :				return IDENTIFIER_EDEFAULT == null ? identifier != null						: !IDENTIFIER_EDEFAULT.equals( identifier );		}		return eDynamicIsSet( eFeature );	}