code: public function supportsNesting($conditionType)
      {
          $factory = $this->factories->has($conditionType) ? $this->getFactory($conditionType) : null;
  
          return ($factory instanceof NestablePropertyConditionFactoryInterface)
              || (bool) $this->fallbackFactory->supportsNesting($conditionType);
      }
docs: Test if the passed type supports nesting.
  
  @param string $conditionType The type name.
  
  @return bool