question: returns the prefix to be used when publishing messages to control topics . concode_field_sep String DEVICE_CUSTOM_NAME concode_elem_sep String DEVICE_DISPLAY_NAME concode_elem_sep int LIFECYCLE_PRIORITY concode_elem_sep String TOPIC_WILD_CARD concode_elem_sep Map<String,Object> m_properties concode_elem_sep String TOPIC_CONTROL_PREFIX concode_elem_sep String TOPIC_SEPARATOR concode_elem_sep String TOPIC_CONTROL_PREFIX_DEFAULT concode_elem_sep String TOPIC_BIRTH_SUFFIX concode_elem_sep String REPUB_BIRTH_ON_MODEM_DETECT concode_elem_sep Logger s_logger concode_elem_sep int LIFECYCLE_QOS concode_elem_sep String TOPIC_ACCOUNT_TOKEN concode_elem_sep String TOPIC_CLIENT_ID_TOKEN concode_elem_sep String TOPIC_APPS_SUFFIX concode_elem_sep String ENCODE_GZIP concode_elem_sep String REPUB_BIRTH_ON_GPS_LOCK concode_elem_sep boolean LIFECYCLE_RETAIN concode_elem_sep String TOPIC_DISCONNECT_SUFFIX concode_elem_sep SystemService m_systemService concode_field_sep String getTopicDisconnectSuffix concode_elem_sep String getTopicSeparator concode_elem_sep int getLifeCycleMessageQos concode_elem_sep boolean getEncodeGzip concode_elem_sep int getLifeCycleMessagePriority concode_elem_sep String getDeviceDisplayName concode_elem_sep String getTopicAccountToken concode_elem_sep boolean getRepubBirthCertOnGpsLock concode_elem_sep String getHostname concode_elem_sep String getTopicBirthSuffix concode_elem_sep String getTopicWildCard concode_elem_sep boolean getRepubBirthCertOnModemDetection concode_elem_sep boolean getLifeCycleMessageRetain concode_elem_sep String getTopicAppsSuffix concode_elem_sep String getTopicClientIdToken
target: String function ( ) { String loc0 = TOPIC_CONTROL_PREFIX_DEFAULT ; if ( m_properties != null && m_properties . get ( TOPIC_CONTROL_PREFIX ) != null && m_properties . get ( TOPIC_CONTROL_PREFIX ) instanceof String ) { loc0 = ( String ) m_properties . get ( TOPIC_CONTROL_PREFIX ) ; } return loc0 ; }