question: public MqttPubRel ( byte info , byte [ ] data ) throws IOException { super ( MqttWireMessage . MESSAGE_TYPE_PUBREL ) ; ByteArrayInputStream bais = new ByteArrayInputStream ( data ) ; DataInputStream dis = new DataInputStream ( bais ) ; msgId = dis . readUnsignedShort ( ) ; dis . close ( ) ; }
target:  Creates a pubrel based on a pubrel set of bytes read fro the network