code: public SDVariable sigmoidCrossEntropy(String name, @NonNull SDVariable label, @NonNull SDVariable predictions) {
          return sigmoidCrossEntropy(name, label, predictions, null, LossReduce.MEAN_BY_NONZERO_WEIGHT_COUNT, SigmoidCrossEntropyLoss.DEFAULT_LABEL_SMOOTHING);
      }
docs: See {@link #sigmoidCrossEntropy(String, SDVariable, SDVariable, SDVariable, LossReduce, double)}.