question: private synchronized IMqttToken removeMqttToken ( Bundle data ) { String activityToken = data . getString ( MqttServiceConstants . CALLBACK_ACTIVITY_TOKEN ) ; if ( activityToken != null ) { int tokenNumber = Integer . parseInt ( activityToken ) ; IMqttToken token = tokenMap . get ( tokenNumber ) ; tokenMap . delete ( tokenNumber ) ; return token ; } return null ; }
target:  Get a token identified by a string, and remove it from our map