Method SleepWorker

test/cpp/asyncworker.cpp:17–19

class SleepWorker : public AsyncWorker {
 public:
  SleepWorker(Callback *callback, int milliseconds)
    : AsyncWorker(callback, "nan:test.SleepWorker"),
      milliseconds(milliseconds) {}
  ~SleepWorker() {}

  void Execute () {