presto-plugin-toolkit/src/main/java/io/prestosql/plugin/base/security/ReadOnlySystemAccessControl.java/ReadOnlySystemAccessControl/create
class ReadOnlySystemAccessControl:        @Override
        public SystemAccessControl create(Map<String, String> config)
        {
            requireNonNull(config, "config is null");
            checkArgument(config.isEmpty(), "This access controller does not support any configuration properties");
            return INSTANCE;
        }