code: def find_module(self, fullname, path=None):
          
          if not fullname.startswith(self._group_with_dot):
              return
          end_name = fullname[len(self._group_with_dot):]
          for entry_point in iter_entry_points(group=self.group, name=None):
              if entry_point.name == end_name:
                  return self
docs: Find a module if its name starts with :code:`self.group` and is registered.