presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/thrift/ThriftMetastoreUtil.java/ThriftMetastoreUtil/isCsvTable
class ThriftMetastoreUtil:    public static boolean isCsvTable(org.apache.hadoop.hive.metastore.api.Table table)
    {
        return CSV.getSerDe().equals(getSerdeInfo(table).getSerializationLib());
    }