//! AuthnRequest creation.
use crateOpenSamlError;
use crateIdentityProvider;
use crateServiceProvider;
/// Build a Redirect-binding login URL carrying `SAMLRequest` in the query.
///
/// Stub: returns [`OpenSamlError::Unsupported`] until M1. Will DEFLATE +
/// base64 + url-encode an `<AuthnRequest>` and append it to the IdP SSO URL.