docs: def bring_tab_to_the_top(self, tab_label):
          """Find tab with label tab_label in list of notebooks and set it to the current page.
  
          :param tab_label: String containing the label of the tab to be focused
          """
          found = False
          for notebook in self.left_bar_notebooks:
              for i in range(notebook.get_n_pages()):
                  if gui_helper_label.get_notebook_tab_title(notebook, i) == gui_helper_label.get_widget_title(tab_label):
                      found = True
                      break
              if found:
                  notebook.set_current_page(i)
                  break