he significance level for Qnet.
            - shap_index (list): Predefined list of SHAP indices if available.
            - shapnum (int): Number of samples to calculate SHAP values for.
            - nullsteps (int): Number of steps for q-sampling in the background distribution.
            - veritas_version (str): Version identifier for the model.
        &#34;&#34;&#34;
        
        if self.index_present:
            self.data = pd.read_csv(self.datapath,index_col=0, dtype=str, na_filter=False).fill