ConnectionEventsCallback()
DESCRIPTION
This abstract class allows implementations to receive notification from the SDK on connection events.
Applications registers for notifications using Connection.addConnectionEventsListener().
The following events can be emitted:
CONNECTED
: a connection is establishedCLOSED
: a connection is closedCHANNEL_CHANGED
: the underlying channel has changed, e.g. from relay to p2p
DECLARATION
public abstract class ConnectionEventsCallback