Arduino BLE valueUpdated() disambiguation

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1

Hello, I'm using the Arduino BLUE library. I'm writing a central program, and subscribing to a characteristic. That all works fine, BUT it's not clear how to use

powerChar.valueUpdated()

I mean, it clearly goes true at some point when it gets some data. But does it ever get cleared again? The docs don't say, and if I just poll it like so (powerChar is the characteristic that I subscribed to)

  while (true) {
    if (powerChar.valueUpdated()) {
      // Get the value from the characteristic
      int length = powerChar.valueLength();
      uint8_t data[length];
      powerChar.readValue(data, length);

I clearly get duplicates. It seems like you would really need to either have a callback that you install to handle new data, or at least have valueUpdated() return an int32_t, that increments with each update, so you can do something like:

  uint32_t lastUpdate = 0;
  while (true) {
   uint32_t currentUpdate = powerChar.valueUpdated();
    if (currentUpdate  != lastUpdate) {
      lastUpdate = currentUpdate;
      // Get the value from the characteristic
      int length = powerChar.valueLength();
      uint8_t data[length];
      powerChar.readValue(data, length);

Does anyone know, Is this addressed somehow, or should I try asking on the github for that library?