docs: def clear(self):
          """
          Clears out all the actions and items from this toolbar.
          """
          # clear the actions from this widget
          for act in self.actions():
              act.setParent(None)
              act.deleteLater()
          
          # clear the labels from this widget
          for lbl in self.actionLabels():
              lbl.close()
              lbl.deleteLater()