setSubTopic abstract method
Method is used to set MQTT sub-topic for publishing position data.
The final topic will be "navigine/mobile/positions/" + subTopic + "/" + deviceId.
subTopic MQTT sub-topic for publishing position data. Must match pattern 0-9a-zA-Z_-+ and cannot be empty.
Example:
// Set MQTT sub-topic for publishing position data
// Final topic will be "navigine/mobile/positions/" + subTopic + "/" + deviceId
_mqttSession!.setSubTopic("location1");
Implementation
void setSubTopic(String subTopic);