/**
* Instance of TokenInterface has 'isValid()'
* method to checking validation. Instead of
* returning false, throws an exception.
*
* @param \ComicAPI\Tokens\TokenInterface $token Instance of Token.
*
* @throws \ComicAPI\Exceptions\ComicApiException
*/
protected function isValidSingle(TokenInterface $token)
{
if ($token->isValid() === false) {
throw new ComicApiException(sprintf("The token %s is invalid.", $token->getType()));
}
}
