switch ( eDerivedStructuralFeatureID( eFeature ) )
switch ( featureID )
	public boolean eIsSet( EStructuralFeature eFeature )	{		switch ( eDerivedStructuralFeatureID( eFeature ) )		{			case AttributePackage.JAVA_DATE_FORMAT_SPECIFIER__PATTERN :				return PATTERN_EDEFAULT == null ? pattern != null						: !PATTERN_EDEFAULT.equals( pattern );		}		return eDynamicIsSet( eFeature );	}