MqttConnectPayload.passwordInBytes()
MqttConnectPayload.willMessageInBytes()
MqttMessageBuilders.ConnectBuilder.password(byte[])
MqttMessageBuilders.ConnectBuilder.willMessage(byte[])
MqttMessageBuilders.PubAckBuilder.packetId(int)
MqttMessageBuilders.SubAckBuilder.packetId(int)
MqttMessageBuilders.UnsubAckBuilder.packetId(int)
MqttPublishVariableHeader.packetId()
MqttConnectPayload(String, MqttProperties, String, byte[], String, byte[])