enum nm_iam_error {
    NM_IAM_ERROR_OK,
    NM_IAM_ERROR_NO_SUCH_USER,
    NM_IAM_ERROR_NO_SUCH_ROLE,
    NM_IAM_ERROR_USER_EXISTS,
    NM_IAM_ERROR_INVALID_FINGERPRINT,
    NM_IAM_ERROR_NO_SUCH_CATEGORY,
    NM_IAM_ERROR_INVALID_ARGUMENT,
    NM_IAM_ERROR_INTERNAL
}