public function set($key, $message)
    {
        $this->storage->set(self::FLASH_KEY, array($key => $message));
        return $this;
    }
public function set($key, $message)
    {
        $this->storage->set(self::FLASH_KEY, array($key => $message));
        return $this;
    }
public function set ( $ key , $ message ) { $ this -> storage -> set ( self :: FLASH_KEY , array ( $ key => $ message ) ) ; return $ this ; }
Sets a message by given key name

@param string $key
@param string $message
@return \Krystal\Form\FlashMessenger
Sets a message by given key name