code: def resize(self, new_size_slug, return_dict=True, disk=True):
          
          options = {"type": "resize", "size": new_size_slug}
          if disk: options["disk"] = "true"
  
          return self._perform_action(options, return_dict)
docs: Resize the droplet to a new size slug.
          https://developers.digitalocean.com/documentation/v2/#resize-a-droplet
  
          Args:
              new_size_slug (str): name of new size
  
          Optional Args:
              return_dict (bool): Return a dict when True (default),
                                  otherwise return an Action.
              disk (bool): If a permanent resize, with disk changes included.
  
          Returns dict or Action