Smile\ElasticsuiteCore\Controller\Adminhtml\Search\Request\RelevanceConfig\Save::getGroupsForSave PHP Метод

    protected function getGroupsForSave()
    {
        $groups = $this->getRequest()->getPost('groups');
        $files = $this->getRequest()->getFiles('groups');
        if ($files && is_array($files)) {
            /**
             * Carefully merge $_FILES and $_POST information
             * None of '+=' or 'array_merge_recursive' can do this correct
             */
            foreach ($files as $groupName => $group) {
                $data = $this->processNestedGroups($group);
                if (!empty($data)) {
                    if (!empty($groups[$groupName])) {
                        $groups[$groupName] = array_merge_recursive((array) $groups[$groupName], $data);
                    } else {
                        $groups[$groupName] = $data;
                    }
                }
            }
        }
        return $groups;
    }