static function fetchByObjectAttributeID( $id, $contentobjectAttributeID, $asObject = true )
 {
     return eZPersistentObject::fetchObject( eZInformationCollectionAttribute::definition(),
                                             null,
                                             array( 'informationcollection_id' => $id,
                                                    'contentobject_attribute_id' => $contentobjectAttributeID ),
                                             $asObject );
 }