public Map<String, String> getAdditionalUrlParameters(
      DataVertical dataType, AuthMode mode, OAuth1Step step) {

    if (dataType.equals(PHOTOS) && step == OAuth1Step.AUTHORIZATION) {
      return (mode == AuthMode.EXPORT)
          ? ImmutableMap.of(ACCESS, "Full", PERMISSIONS, "Read")
          : ImmutableMap.of(ACCESS, "Full", PERMISSIONS, "Add");
    }

    // default
    return Collections.emptyMap();
  }
Class that supplies SmugMug-specific OAuth1 info
See https://api.smugmug.com/api/v2/doc/tutorial/authorization.html
extensions/auth/portability-auth-smugmug/src/main/java/org/datatransferproject/auth/smugmug/SmugMugOAuthConfig.java