final Field paramField = authFlow.getClass().getDeclaredField("parameters");
paramField.setAccessible(true);
final OAuth1Parameters params = (OAuth1Parameters) paramField.get(authFlow);
// Update parameters.
params.timestamp("1191242092").nonce("dji430splmx33448");
final AccessToken accessToken = authFlow.finish();
assertThat(accessToken, equalTo(new AccessToken("nnch734d00sl2jdk", "pfkkdhi9sl3r4s00")));
// Update parameters before creating a feature (i.e. changing signature method).