code: public function createAttribute($information, $metaModel)
      {
          $event = new CreateAttributeEvent($information, $metaModel);
          $this->eventDispatcher->dispatch(CreateAttributeEvent::NAME, $event);
  
          if ($event->getAttribute()) {
              return $event->getAttribute();
          }
  
          $factory = $this->getTypeFactory($information['type']);
  
          if (!$factory) {
              return null;
          }
  
          return $factory->createInstance($information, $metaModel);
      }
docs: Create an attribute instance from an information array.
  
  @param array      $information The attribute information.
  
  @param IMetaModel $metaModel   The MetaModel instance for which the attribute shall be created.
  
  @return IAttribute|null