code: def close(self):
          ''' Close the application and all installed plugins. '''
          for plugin in self.plugins:
              if hasattr(plugin, 'close'): plugin.close()
          self.stopped = Truf close(self):
          ''' Close the application and all installed plugins. '''
          for plugin in self.plugins:
              if hasattr(plugin, 'close'): plugin.close()
          self.stopped = True
docs: Close the application and all installed plugins.