Jackalope\Version\VersionHistory::getAllLinearVersions PHP Method

    public function getAllLinearVersions()
    {
        // OPTIMIZE: special iterator that delays loading the versions
        if (!$this->linearVersions) {
            $version = $this->getRootVersion();
            do {
                $this->linearVersions[$version->getName()] = $version;
            } while ($version = $version->getLinearSuccessor());
        }
        return new ArrayIterator($this->linearVersions);
    }