docs: def resolve_vanity_url(self, vanityURL, url_type=1, format=None):
          """Request the steam id associated with a vanity url.
  
          vanityURL: The users vanity URL
          url_type: The type of vanity URL. 1 (default): Individual profile,
                      2: Group, 3: Official game group
          format: Return format. None defaults to json. (json, xml, vdf)
  
          """
          parameters = {'vanityurl' : vanityURL, "url_type" : url_type}
          if format is not None:
              parameters['format'] = format
          url = self.create_request_url(self.interface, 'ResolveVanityUrl', 1,
              parameters)
          data = self.retrieve_request(url)
          return self.return_data(data, format=format)