code: def show_options(self):
          
          # import here only so that it is AFTER i18n set up
          from safe.gui.tools.options_dialog import OptionsDialog
  
          dialog = OptionsDialog(
              iface=self.iface,
              parent=self.iface.mainWindow())
          dialog.show_option_dialog()
          if dialog.exec_():  # modal
              self.dock_widget.read_settings()
              from safe.gui.widgets.message import getting_started_message
              send_static_message(self.dock_widget, getting_started_message())
              # Issue #4734, make sure to update the combobox after update the
              # InaSAFE option
              self.dock_widget.get_layers()
docs: Show the options dialog.