There is undocumented function parameter in

PHPDoc block misses 3 parameter of Zend_Db_Table_Row_Abstract :: findDependentRowset() (line 788). Missing parameter is $select

    /**
     * Query a dependent table to retrieve rows matching the current row.
     *
     * @param string|Zend_Db_Table_Abstract  $dependentTable
     * @param string                         OPTIONAL $ruleKey
     * @return Zend_Db_Table_Rowset_Abstract Query result from $dependentTable
     * @throws Zend_Db_Table_Row_Exception If $dependentTable is not a table or is not loadable.
     */
    public function findDependentRowset($dependentTable, $ruleKey = null, Zend_Db_Table_Select $select = null)