docs: def get_active_lineage():
      """
      Query the lineage of the current timer level.  Provides only timer names,
      not stamp names (as these have not been decided yet!).
  
      Returns:
          str: Formatted sequence of timer names in one string.
      """
      lin_str = ''
      for active_timer in f.timer_stack:
          lin_str += "{}-->".format(active_timer.name)
      try:
          return lin_str[:-3]
      except IndexError:
          pass