public function skip($by = 1)
    {
        $i = 0;
        while($this->cursor->valid() && $i < $by) {
            $this->cursor->next();
            $i++;
        }
        return $this;
    }
public function skip($by = 1)
    {
        $i = 0;
        while($this->cursor->valid() && $i < $by) {
            $this->cursor->next();
            $i++;
        }
        return $this;
    }
public function skip ( $ by = 1 ) { $ i = 0 ; while ( $ this -> cursor -> valid ( ) && $ i < $ by ) { $ this -> cursor -> next ( ) ; $ i ++ ; } return $ this ; }
Method for moving cursor by specified amount of record

@param int $by
@return $this
Method for moving cursor by specified amount of record