/**
  * @return VMConfig[]
  */
 protected function loadVMConfig()
 {
     if (null === $this->VMConfig) {
         $this->VMConfig = ConfigManager::loadVMConfig();
     }
     $result = [];
     foreach ($this->VMConfig as $config) {
         $result[$config->getName()] = $config;
     }
     return $result;
 }