r of parallel workers for calibration.
        calibration_num (int): Number of calibration samples.
        &#34;&#34;&#34;

        featurenames = self.veritas_model[&#39;model&#39;].feature_names
        NSTR = np.array([&#39;&#39;] * len(featurenames)).astype(&#39;U100&#39;)
        model = self.veritas_model[&#39;model&#39;]

        if self.VERBOSE:
            print(&#39;calibrating...&#39;)

        seed=0
        init_globals(model, qsteps, NSTR)
        with ProcessPoolExecutor(max_workers=num_wor