@Override
    public <T> Observable<T> queue(@NonNull RxBleCustomOperation<T> operation) {
        throw new UnsupportedOperationException("Mock does not support queuing custom operation.");
    }
Value used to disable notifications or indicatinos
mockrxandroidble/src/main/java/com/polidea/rxandroidble2/mockrxandroidble/RxBleConnectionMock.java