How to use the scs.controller.nodes function in scs

def get(self, request, app, name, queue=None, nowait=False):
        return nodes.consuming_from(name)

def put(self, request, app, name=None, nowait=False):
        return self.Created(nodes.add(name=name, app=app,
                                      nowait=nowait,
                                      **self.params("broker", "pool")))
    post = put

def put(self, request, app, name, queue, nowait=False):
        return self.Created(nodes.add_consumer(name, queue, nowait=nowait))
    post = put

def get(self, request, app, name=None, nowait=False):
        return nodes.get(name) if name else nodes.all(app=app)

def get(self, request, app, name):
        node = nodes.get(name)
        return {"max": node["max_concurrency"], "min": node["min_concurrency"]}

def delete(self, request, app, name, queue, nowait=False):
        return self.Ok(nodes.cancel_consumer(name, queue, nowait=nowait))

def post(self, request, app, name, nowait=False):
        return self.Ok(nodes.autoscale(name, nowait=nowait,
                                       **self.params(("max", int),
                                                     ("min", int))))