docs: def GetNodes(r, bulk=False):
      """
      Gets all nodes in the cluster.
  
      @type bulk: bool
      @param bulk: whether to return all information about all instances
  
      @rtype: list of dict or str
      @return: if bulk is true, info about nodes in the cluster,
              else list of nodes in the cluster
      """
  
      if bulk:
          return r.request("get", "/2/nodes", query={"bulk": 1})
      else:
          nodes = r.request("get", "/2/nodes")
          return r.applier(itemgetters("id"), nodes)