docs: def observe(self, event_name, func):
          """
          event_name := {'created', 'modified', 'deleted'}, list, tuple
  
          Attaches a function to run to a particular event. The function must be
          unique to be removed cleanly. Alternatively, event_name can be an list/
          tuple if any of the string possibilities to be added on multiple events
          """
          if isinstance(event_name, list) or isinstance(event_name, tuple):
              for name in event_name:
                  self.observe(name, func)
              return
          self.log(func.__name__, "attached to", event_name)
          self._modify_event(event_name, 'append', func)