// get authorization code
final String authorizationCode = params.get("code");
// get OAuth token
final IBoxOAuthManager oAuthManager = boxClient.getOAuthManager();
final BoxOAuthToken oAuthToken = oAuthManager.createOAuth(authorizationCode,
configuration.getClientId(), configuration.getClientSecret(), null);
// send initial token to BoxClient and this.listener
final OAuthDataMessage authDataMessage = new OAuthDataMessage(oAuthToken,
boxClient.getJSONParser(), boxClient.getResourceHub());