public static BleDisconnectedException adapterDisabled(String macAddress) {
        return new BleDisconnectedException(new BleAdapterDisabledException(), macAddress, UNKNOWN_STATUS);
    }
Set when the state is not available, for example when the adapter has been switched off.
rxandroidble/src/main/java/com/polidea/rxandroidble2/exceptions/BleDisconnectedException.java