docs: def select_plugin(self, case_obj):
          """Select and initialize the correct plugin for the case."""
          if case_obj.variant_mode == 'vcf':
              logger.debug("Using vcf plugin")
              plugin = VcfPlugin(case_obj.variant_type)
          elif case_obj.variant_mode == 'gemini':
              logger.debug("Using gemini plugin")
              plugin = GeminiPlugin(case_obj.variant_type)
          
          #Add case to plugin
          plugin.add_case(case_obj)
  
          self.variant_type = case_obj.variant_type
  
          case_id = case_obj.case_id
          return plugin, case_id