.apply without changing scope

I want to use the JavaScript .apply method to functions of a thrift compiled for Node.js. The thrift .js file has code like this:

...var NimbusClient = exports.Client = function(output, pClass) {    this.output = output;    this.pClass = pClass;    this.seqid = 0;    this._reqs = {};};NimbusClient.prototype = {};NimbusClient.prototype.getClusterInfo = function(callback) {    this.seqid += 1; // line where error is thrown [0]    this._reqs[this.seqid] = callback;    this.send_getClusterInfo();};...

My server file looks the following way:

var thrift = require('thrift')    , nimbus = require('./Nimbus')    , connection = thrift.createConnection('127.0.0.1', 6627)    , client = thrift.createClient(nimbus, connection)    , ... // server initiation etcapp.get('/nimbus/:command', function(req, res, next) {    client[req.params.command](console.log); // direct call [1]    client[req.params.command].apply(this, [console.log]); // apply call [2]});...

The direct call [1] returns the values as expected, but the apply call [2] always produces the following error in line [0]:

TypeError: Cannot set property 'NaN' of undefined

I tried several other scope parameters in [2]: null, nimbus, nimbus.Client, nimbus.Client.prototype, nimbus.Client.prototype[req.params.command] and client[req.params.command], all without success.

How can I call the apply method without changing the actual scope of the function called, so that it behaves exactly the same as it would if called in the direct way?