private URI getIdpUrl() throws GuacamoleException {
        return environment.getProperty(SAML_IDP_URL);
    }
Return the URL used to log in to the SAML IdP.

@return
    The URL used to log in to the SAML IdP.

@throws GuacamoleException
    If guacamole.properties cannot be parsed.
extensions/guacamole-auth-sso/modules/guacamole-auth-sso-saml/src/main/java/org/apache/guacamole/auth/saml/conf/ConfigurationService.java