code: def get_bundles():
      
      global _cached_bundles
  
      if not _cached_bundles:
          _cached_bundles = BundleManager()
  
          for bundle_conf in bundles_settings.BUNDLES:
              _cached_bundles[bundle_conf[0]] = Bundle(bundle_conf)
  
      return _cached_bundles
docs: Used to cache the bundle definitions rather than loading from config every time they're used