code: def load_tabs(self):
          
          tab_group = self.get_tabs(self.request, **self.kwargs)
          tabs = tab_group.get_tabs()
          for tab in [t for t in tabs if issubclass(t.__class__, TableTab)]:
              self.table_classes.extend(tab.table_classes)
              for table in tab._tables.values():
                  self._table_dict[table._meta.name] = {'table': table,
                                                        'tab': tab}
docs: Loads the tab group.
  
          It compiles the table instances for each table attached to
          any :class:`horizon.tabs.TableTab` instances on the tab group.
          This step is necessary before processing any tab or table actions.