This message is triggered if an error occurs.
This message is triggered when a message is received.
This message is triggered when a message that matches a pattern is received.
This message is triggered after we successfully subscribed to a pattern.
This message is triggered after we successfully unsubscribed from a pattern.
This message is triggered after we successfully subscribed to a channel.
This message is triggered after we successfully unsubscribed from a channel.
Contains all pub/sub messages.