throws Exception {
Credential credential =
new Credential.Builder(BearerToken.queryParameterAccessMethod()).setTransport(transport)
.setJsonFactory(JSON_FACTORY)
.setTokenServerUrl(TOKEN_SERVER_URL)
.setClientAuthentication(new BasicAuthentication(CLIENT_ID, CLIENT_SECRET))
.build()
.setRefreshToken(REFRESH_TOKEN)
.setAccessToken(ACCESS_TOKEN);
HttpRequestFactory requestFactory = transport.createRequestFactory(credential);
HttpRequest request = requestFactory.buildDeleteRequest(HttpTesting.SIMPLE_GENERIC_URL);