code: def RenameGroup(r, group, new_name):
      
  
      body = {
          "new_name": new_name,
      }
  
      return r.request("put", "/2/groups/%s/rename" % group, content=body)
docs: Changes the name of a node group.
  
      @type group: string
      @param group: Node group name
      @type new_name: string
      @param new_name: New node group name
  
      @rtype: int
      @return: job id