presto-kafka/src/main/java/io/prestosql/plugin/kafka/KafkaMetadata.java/KafkaMetadata/KafkaMetadata
class KafkaMetadata:    @Inject
    public KafkaMetadata(
            KafkaConnectorConfig kafkaConnectorConfig,
            Supplier<Map<SchemaTableName, KafkaTopicDescription>> kafkaTableDescriptionSupplier)
    {
        requireNonNull(kafkaConnectorConfig, "kafkaConfig is null");
        this.hideInternalColumns = kafkaConnectorConfig.isHideInternalColumns();

        requireNonNull(kafkaTableDescriptionSupplier, "kafkaTableDescriptionSupplier is null");
        this.tableDescriptions = kafkaTableDescriptionSupplier.get();
    }