presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/StorageFormat.java/StorageFormat/getSerDe
class StorageFormat:    public String getSerDe()
    {
        if (serDe == null) {
            throw new PrestoException(HIVE_INVALID_METADATA, "SerDe is not present in StorageFormat");
        }
        return serDe;
    }