presto-redis/src/main/java/io/prestosql/plugin/redis/RedisConnectorFactory.java/RedisConnectorFactory/RedisConnectorFactory
class RedisConnectorFactory:    RedisConnectorFactory(Optional<Supplier<Map<SchemaTableName, RedisTableDescription>>> tableDescriptionSupplier)
    {
        this.tableDescriptionSupplier = requireNonNull(tableDescriptionSupplier, "tableDescriptionSupplier is null");
    }