docs: public AsyncTwitter getInstance(AccessToken accessToken) {
          String consumerKey = conf.getOAuthConsumerKey();
          String consumerSecret = conf.getOAuthConsumerSecret();
          if (null == consumerKey && null == consumerSecret) {
              throw new IllegalStateException("Consumer key and Consumer secret not supplied.");
          }
          OAuthAuthorization oauth = new OAuthAuthorization(conf);
          oauth.setOAuthConsumer(consumerKey, consumerSecret);
          oauth.setOAuthAccessToken(accessToken);
          return new AsyncTwitterImpl(conf, oauth);
      }