@Override
    public String toString() {
        return MoreObjects.toStringHelper(this)
                          .add("uri", uri)
                          .add("bindingProtocol", bindingProtocol)
                          .toString();
    }
Returns a {@link SamlBindingProtocol} of this endpoint.
saml/src/main/java/com/linecorp/armeria/server/saml/SamlEndpoint.java