src/Laravel/StorageStructure.php
public function getGroupsSub9n($blockName) //getGroupsStruct
    {

        $groups_conf = $this->getGroupsFlatConfig($blockName);
        $groupstruct_invert = [];

        foreach ($groups_conf as $groupname => $_conf)
        {
            if(!array_key_exists($groupname, $groupstruct_invert))
            {
                $groupstruct_invert[$groupname] = [];
            }

            if(array_key_exists('owner', $_conf))
            {
                if(!array_key_exists($_conf['owner'], $groupstruct_invert))
                {
                    $groupstruct_invert[$_conf['owner']] = [];
                }

                $groupstruct_invert[$_conf['owner']][] = $groupname;
            }
        }

        return $groupstruct_invert;
    }
public function getGroupsSub9n($blockName) //getGroupsStruct
    {

        $groups_conf = $this->getGroupsFlatConfig($blockName);
        $groupstruct_invert = [];

        foreach ($groups_conf as $groupname => $_conf)
        {
            if(!array_key_exists($groupname, $groupstruct_invert))
            {
                $groupstruct_invert[$groupname] = [];
            }

            if(array_key_exists('owner', $_conf))
            {
                if(!array_key_exists($_conf['owner'], $groupstruct_invert))
                {
                    $groupstruct_invert[$_conf['owner']] = [];
                }

                $groupstruct_invert[$_conf['owner']][] = $groupname;
            }
        }

        return $groupstruct_invert;
    }
@param string $blockName

@return array