Pimcore\Model\Object\KeyValue\GroupConfig::setName PHP Method

    public function setName($name)
    {
        $this->name = $name;
        return $this;
    }

 public function addgroupAction()
 {
     $name = $this->getParam("name");
     $alreadyExist = false;
     $config = KeyValue\GroupConfig::getByName($name);
     if (!$config) {
         $config = new KeyValue\GroupConfig();
         $config->setName($name);
         $config->save();
     }
     $this->_helper->json(["success" => !$alreadyExist, "id" => $config->getName()]);
 }