question: unregister an existing connection observer . concode_field_sep Logger logger concode_elem_sep ConcurrentHashMap<String,MqttBrokerConnection> brokerConnections concode_elem_sep EventPublisher eventPublisher concode_field_sep void unsetEventPublisher concode_elem_sep MqttBrokerConnection getConnection concode_elem_sep void unregisterMessageConsumer concode_elem_sep void registerMessageProducer concode_elem_sep void activate concode_elem_sep void setEventPublisher concode_elem_sep void registerConnectionObserver concode_elem_sep void registerMessageConsumer concode_elem_sep void updated concode_elem_sep void unregisterMessageProducer concode_elem_sep void deactivate
target: void function ( String arg0 , MqttConnectionObserver arg1 ) { getConnection ( arg0 ) . removeConnectionObserver ( arg1 ) ; }