public function getFeedComments($channelIdentifier, $postId, $accessToken, $limit = 10, $cursor = null)
    {
        if ($this->apiVersionIsGreaterThanV3() && !is_numeric($channelIdentifier)) {
            throw new InvalidIdentifierException('channel');
        }

        if (!is_string($postId)) {
            throw new InvalidTypeException('Post ID', 'string', gettype($postId));
        }

        if (!$this->isValidLimit($limit)) {
            throw new InvalidLimitException();
        }

        if ($cursor && !is_string($cursor)) {
            throw new InvalidTypeException('Cursor', 'string', gettype($cursor));
        }

        $params = [
            'limit' => intval($limit),
            'cursor' => $cursor,
        ];

        return $this->get(sprintf('feed/%s/posts/%s/comments', $channelIdentifier, $postId), $params, $accessToken);
    }