Phpro\SoapClient\Soap\ClassMap\ClassMapCollection::add PHP Метод

    public function add(ClassMapInterface $classMap)
    {
        if ($this->has($classMap)) {
            throw new InvalidArgumentException('The classmap already exists!');
        }
        return $this->set($classMap);
    }

 /**
  * @param ClassMapInterface $classMap
  */
 public function addClassMap(ClassMapInterface $classMap)
 {
     $this->classMaps->add($classMap);
 }