public function token() {

		$session = new Session();

		$name  = $this -> getValue('_token-name');
		$value = $this -> getValue('_token-value');

		if((null !== $name && null !== $value && $session -> pull(['_token', $name]) !== $value) || null === $name || null === $value) {
			
			$instance = $this -> getMessageInstance();
			$instance :: setFieldnames(['_token']);
			$instance :: setError(null, '_token', 'Token mismatch');
			$this -> setPasses(false);
		}
	}