src/Laravel/StorageStructure.php
public function groupInBlockExist($blockName, $groupName)
    {
        $groups_conf = $this->getGroupsFlatConfig($blockName);

        return array_key_exists($groupName, $groups_conf);
    }
public function groupInBlockExist($blockName, $groupName)
    {
        $groups_conf = $this->getGroupsFlatConfig($blockName);

        return array_key_exists($groupName, $groups_conf);
    }
@param string $blockName

@param string $groupName

@return bool