/**
  * Retrieve an OAuth 1.0 access token from the myExperiment response.
  *
  * @param pageParameters page params
  * @param service myExperiment OAuth service instance
  * @return the access token
  */
 private Token retrieveMyExpAccessToken(PageParameters pageParameters, OAuthService service) {
   Token accessToken = null;
   if (!pageParameters.get(MyExpApi.OAUTH_VERIFIER).isEmpty()) {
     Verifier verifier = new Verifier(pageParameters.get(MyExpApi.OAUTH_VERIFIER).toString());
     Token requestToken = MySession.get().getRequestToken();
     LOG.debug(
         "Request token: "
             + requestToken.toString()
             + " verifier: "
             + verifier.getValue()
             + " service: "
             + service.getAuthorizationUrl(requestToken));
     accessToken = service.getAccessToken(requestToken, verifier);
   }
   return accessToken;
 }
 public String toString() {
   return delegate.toString();
 }