static public function fetchByObjectAttributeAndKeywordID( $objectAttributeID, $objectAttributeVersion, $objectID, $keywordID )
    {
        $objects = parent::fetchObjectList( self::definition(), null,
                                                        array( 'objectattribute_id'      => $objectAttributeID,
                                                               'objectattribute_version' => $objectAttributeVersion,
                                                               'object_id'               => $objectID,
                                                               'keyword_id'              => $keywordID ) );

        if ( is_array( $objects ) && !empty( $objects ) )
            return $objects[0];

        return false;
    }