presto-kinesis/src/main/java/io/prestosql/plugin/kinesis/s3config/S3TableConfigClient.java/S3TableConfigClient/getTablesFromS3
class S3TableConfigClient:    public Map<SchemaTableName, KinesisStreamDescription> getTablesFromS3()
    {
        updateTablesFromS3();
        Collection<KinesisStreamDescription> streamValues = this.descriptors.values();
        ImmutableMap.Builder<SchemaTableName, KinesisStreamDescription> builder = ImmutableMap.builder();
        for (KinesisStreamDescription stream : streamValues) {
            builder.put(new SchemaTableName(stream.getSchemaName(), stream.getTableName()), stream);
        }
        return builder.build();
    }