private function prepare()
    {
        if (!$this->storage->has(self::FLASH_KEY)) {
            $this->storage->set(self::FLASH_KEY, array());
        }
    }
private function prepare()
    {
        if (!$this->storage->has(self::FLASH_KEY)) {
            $this->storage->set(self::FLASH_KEY, array());
        }
    }
private function prepare ( ) { if ( ! $ this -> storage -> has ( self :: FLASH_KEY ) ) { $ this -> storage -> set ( self :: FLASH_KEY , array ( ) ) ; } }
Prepares a messenger for usage

@return void
Prepares a messenger for usage