public static String formatField(final SensorFormat type) {
        switch (type) {
            case FORMAT_A:
                return "Format A";
            case FORMAT_B:
                return "Format B";
            default:
                return "Unknown";
        }
    }
The Format field is a 1-bit bit field that identifies the format of the Length and Property ID fields of Sensor Data
mesh/src/main/java/no/nordicsemi/android/mesh/utils/SensorFormat.java