public function checkUserFollowsChannel($userIdentifier, $channelIdentifier)
    {
        if ($this->apiVersionIsGreaterThanV3()) {
            if (!is_numeric($userIdentifier)) {
                throw new InvalidIdentifierException('user');
            }

            if (!is_numeric($channelIdentifier)) {
                throw new InvalidIdentifierException('channel');
            }
        }

        return $this->get(sprintf('users/%s/follows/channels/%s', $userIdentifier, $channelIdentifier));
    }