wait_for_event()

* Signature: $self->wait_for_event($event_token)
* Param:     $event_token     string
* Return:    void
* Throws:    App::Exception
* Since:     0.01

Sample Usage: 

$self->wait_for_event($event_token);

The wait_for_event() method is called when an asynchronous event has been sent and no more processing can be completed before it is done.

user()

The user() method returns the username of the authenticated user. The special name, "guest", refers to the unauthenticated (anonymous) user.

* Signature: $username = $context->user();
* Param:  void
* Return: string
* Throws: <none>
* Since:  0.01

Sample Usage: 

$username = $context->user();