$token
$token :
Listener used to sign requests before they are sent over the wire.
getSubscribedEvents() : array
Returns an array of event names this subscriber wants to listen to.
The array keys are event names and the value can be:
For instance:
The event names to listen to
onRequestBeforeSend(\Guzzle\Common\Event $event)
Signs requests before they are sent
| \Guzzle\Common\Event | $event | Event emitted |