docs: def _add_impact_severity(self, variant_obj):
          """Add the impact severity for the most severe consequence
          
              Args:
                  variant_obj (puzzle.models.Variant)
          
          """
          if variant_obj.most_severe_consequence:
              variant_obj.impact_severity = IMPACT_SEVERITIES.get(
                  variant_obj.most_severe_consequence
              )