Puli\Manager\Module\RootModuleFileManagerImpl::findExtraKeys PHP Method

    public function findExtraKeys(Expression $expr)
    {
        $values = array();
        foreach ($this->rootModuleFile->getExtraKeys() as $key => $value) {
            if ($expr->evaluate($key)) {
                $values[$key] = $value;
            }
        }
        return $values;
    }