code: def load_module(self, fullname):
          
          if fullname in sys.modules:
              return sys.modules[fullname]
          end_name = fullname[len(self._group_with_dot):]
          for entry_point in iter_entry_points(group=self.group, name=end_name):
              mod = entry_point.load()
              sys.modules[fullname] = mod
              return mod
docs: Load a module if its name starts with :code:`self.group` and is registered.