public function comment($comment = null) {
		if ($comment) {
			$this->_config['comment'] = $comment;
			return $this;
		}
		return $this->_config['comment'];
	}
public function comment($comment = null) {
		if ($comment) {
			$this->_config['comment'] = $comment;
			return $this;
		}
		return $this->_config['comment'];
	}
public function comment ( $ comment = null ) { if ( $ comment ) { $ this -> _config [ 'comment' ] = $ comment ; return $ this ; } return $ this -> _config [ 'comment' ] ; }
Set and get method for current query's comment.

Comment will have no effect on query, but will be passed along so data source can log it.

@param string|null $comment
@return string|\lithium\data\Query
Set and get method for current query s comment .