code: def small_image_url(self):
          
          if self.application_id is None:
              return None
  
          try:
              small_image = self.assets['small_image']
          except KeyError:
              return None
          else:
              return 'https://cdn.discordapp.com/app-assets/{0}/{1}.png'.format(self.application_id, small_image)
docs: Optional[:class:`str`]: Returns a URL pointing to the small image asset of this activity if applicable.