public Builder l2Bias(double l2Bias) {
            NetworkUtils.removeInstances(this.regularizationBias, L2Regularization.class);
            if(l2Bias > 0.0) {
                NetworkUtils.removeInstancesWithWarning(this.regularizationBias, WeightDecay.class, "L2 bias regularization removed: incompatible with added WeightDecay regularization");
                this.regularizationBias.add(new L2Regularization(l2Bias));