CONNECTED
CONNECTED: "connected"
CONNECTING
CONNECTING: "connecting"
DIALING
DIALING: "dialing"
DISCONNECTED
DISCONNECTED: "disconnected"
DISCONNECTING
DISCONNECTING: "disconnecting"
RECONNECTING
RECONNECTING: "reconnecting"
RECONNECTION_FAILED
RECONNECTION_FAILED: "reconnection_failed"
MachineConnectionEvent events are emitted by a Client's EventDispatcher when connection events occur.