}
@Override
protected OAuthPrincipal<TwitterAccessTokenContext> getOAuthPrincipal(HttpServletRequest request, HttpServletResponse response,
InteractionState<TwitterAccessTokenContext> interactionState) {
TwitterAccessTokenContext accessTokenContext = interactionState.getAccessTokenContext();
Twitter twitter = ((TwitterProcessor)getOauthProviderProcessor()).getAuthorizedTwitterInstance(accessTokenContext);
User twitterUser;
try {
twitterUser = twitter.verifyCredentials();