docs: def update(self, name=None, cooldown=None, min_entities=None,
              max_entities=None, metadata=None):
          """
          Updates this ScalingGroup. One or more of the attributes can be
          specified.
  
          NOTE: if you specify metadata, it will *replace* any existing metadata.
          If you want to add to it, you either need to pass the complete dict of
          metadata, or call the update_metadata() method.
          """
          return self.manager.update(self, name=name,
                  cooldown=cooldown, min_entities=min_entities,
                  max_entities=max_entities, metadata=metadata)