The channel on which the event will be broadcast
The HubPayload
The source of the event; defaults to ''
Symbol used to determine if the event is dispatched internally on a protected channel
Used to listen for Hub events.
The channel on which to listen
The callback to execute when an event is received on the specified channel
The name of the listener; defaults to 'noname'
A function which can be called to cancel the listener.
Used to send a Hub event.