How to handle DevStatusReq with lorawan heltec library

Hello, I can’t find anywhere if heltec lorawan library has build in DevStatus response. If yes how can I pass battery level to it? If no, Is there a way to implement it?

Thanks in advance!

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static void prepareTxFrame( uint8_t port )
{
    appDataSize = 4;//AppDataSize max value is 64 ( src/Commissioning.h -> 128 ) 
    appData[0] = 0x00;
    appData[1] = 0x01;
    appData[2] = 0x02;
    appData[3] = 0x03;
}