public function getMode()
	{
        if(isset($this->_config['mode']) && $this->_config['mode']) {
            $this->_mode =$this->_config['mode'];
        }
        
		return $this->_mode;
	}
public function getMode()
	{
        if(isset($this->_config['mode']) && $this->_config['mode']) {
            $this->_mode =$this->_config['mode'];
        }
        
		return $this->_mode;
	}
public function getMode ( ) { if ( isset ( $ this -> _config [ 'mode' ] ) && $ this -> _config [ 'mode' ] ) { $ this -> _mode = $ this -> _config [ 'mode' ] ; } return $ this -> _mode ; }
return the mode . can be either dev or preprod or live
@return string
return the mode . can be either dev or preprod or live