presto-kafka/src/main/java/io/prestosql/plugin/kafka/KafkaTableDescriptionSupplier.java/KafkaTableDescriptionSupplier/KafkaTableDescriptionSupplier
class KafkaTableDescriptionSupplier:    @Inject
    KafkaTableDescriptionSupplier(KafkaConnectorConfig kafkaConnectorConfig, JsonCodec<KafkaTopicDescription> topicDescriptionCodec)
    {
        this.topicDescriptionCodec = requireNonNull(topicDescriptionCodec, "topicDescriptionCodec is null");

        requireNonNull(kafkaConnectorConfig, "kafkaConfig is null");
        this.tableDescriptionDir = kafkaConnectorConfig.getTableDescriptionDir();
        this.defaultSchema = kafkaConnectorConfig.getDefaultSchema();
        this.tableNames = ImmutableSet.copyOf(kafkaConnectorConfig.getTableNames());
    }