code: def _pairwise_corr(self, columns=None, covar=None, tail='two-sided',
                     method='pearson', padjust='none', export_filename=None):
      
      stats = pairwise_corr(data=self, columns=columns, covar=covar,
                            tail=tail, method=method, padjust=padjust,
                            export_filename=export_filename)
      return stats
docs: Pairwise (partial) correlations.