protected function getIssueListing()
    {
        $issues = $this
            ->taskGitHubIssueList(
                $this->getToken(),
                $this->getAccount(),
                $this->getRepository()
            )
            ->run();

        $listing = [];
        foreach ($issues as $issue) {
            if (!isset($issue['title'])) {
                continue;
            }
            $number = $issue['number'];
            $listing[$number] = $issue['title'];
        }

        return $listing;
    }