$driver
$driver : string
Driver.
Event is the base class for classes containing event data.
This class contains no event data. It is used by events that do not pass state information to an event handler when an event is raised.
You can call the method stopPropagation() to abort the execution of further listeners in your event listener.
$driver : string
Driver.
$gateway : string
Method.
$attributes : mixed
Extra attributes.
$endpoint : string
Endpoint.
$payload : array
Payload.