code: protected function getRootCondition()
      {
          $rootProvider = $this->container->getName();
  
          if (($relationship = $this->definition->getRootCondition()) === null) {
              $relationship = new RootCondition();
              $relationship
                  ->setSourceName($rootProvider);
              $this->definition->setRootCondition($relationship);
          }
  
          return $relationship;
      }
docs: Parse the correct conditions for a MetaModel with variant support.
  
  @return RootConditionInterface