public function groupIssues(array $issues, ChangelogConfig $changelogConfig) : array
    {
        $this->linkIssues($issues);

        return $this->groupIssuesByLabels($issues, $changelogConfig);
    }
public function groupIssues(array $issues, ChangelogConfig $changelogConfig) : array
    {
        $this->linkIssues($issues);

        return $this->groupIssuesByLabels($issues, $changelogConfig);
    }
@param Issue[] $issues

@return IssueGroup[]