code: def load(force=False):
      
  
      if GRAFTS and not force:
          return GRAFTS
  
      # insert missing paths
      # this could be a configurated item
      userpath = settings.userpath
      if os.path.isdir(userpath) and userpath not in __path__:
          __path__.append(userpath)
  
      def notify_error(name):
          logging.error('unable to load %s package' % name)
  
      # autoload decorated functions
      walker = walk_packages(__path__, '%s.' % __name__, onerror=notify_error)
      for module_finder, name, ispkg in walker:
          loader = module_finder.find_module(name)
          mod = loader.load_module(name)
          for func in mod.__dict__.values():
              if is_graft(func):
                  GRAFTS.append(func)
  
      # append setuptools modules
      for entry_point in iter_entry_points(group=settings.entry_point):
          try:
              func = entry_point.load()
              if is_graft(func):
                  GRAFTS.append(func)
              else:
                  notify_error(entry_point.name)
          except Exception as error:
              logging.exception(error)
              notify_error(entry_point.name)
  
      return GRAFTS
docs: Magical loading of all grafted functions.
  
      Parameters:
          force (bool): force reload