/**
  * Rewind the Iterator to the first element.
  * Similar to the reset() function for arrays in PHP.
  * Required by interface Iterator.
  *
  * @return Zend_Db_Table_Rowset_Abstract Fluent interface.
  */
 public function rewind()
 {
     $this->_pointer = 0;
     $this->_matchRowset->rewind();
     return $this;
 }