code: def set_border_style_type(self, border_style_type):
          
          style = self.__border_style_factory.create_border(border_style_type)
          self.set_border_style(style)
          return self
docs: Set the border style using the specified border style type. The border style type should be an
          integer value recognized by the border style factory for this formatter instance.
          The built-in border style types are provided by the `MenuBorderStyleType` class, or custom
          border style types can be provided if using a custom border style factory.
          :param border_style_type: an integer value representing the border style type.