code: def update(self, *args, **kwargs):
          
          for k, v in args:
              self[k] = v
          for k, v in kwargs.items():
              self[k] = v
docs: Update ConfigMap from mapping/iterable.
  
          If the key exists the entry is updated else it is added.
  
          Args:
              *args: variable length argument list.  A valid argument is a two item
                  tuple/list.  The first item is the key and the second is the value.
              **kwargs: Arbitrary keyword arguments representing the config.