@Override
        public String getName() { return "postgresql-user-required"; }
Whether a user account within the database is required for authentication
to succeed, even if the user has been authenticated via another
authentication provider.
extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-postgresql/src/main/java/org/apache/guacamole/auth/postgresql/conf/PostgreSQLGuacamoleProperties.java