Jackalope\Version\VersionHistory::removeVersionLabel PHP Метод

    public function removeVersionLabel($label)
    {
        if (!$this->hasVersionLabel($label)) {
            throw new VersionException("No label '{$label}'");
        }
        $version = $this->versionLabels[$label];
        $this->objectManager->removeVersionLabel($version->getPath(), $label);
        unset($this->versionLabels[$label]);
    }