presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/HivePageSinkMetadata.java/HivePageSinkMetadata/getJsonSerializableModifiedPartitions
class HivePageSinkMetadata:    @JsonProperty("modifiedPartitions")
    public List<JsonSerializableEntry<List<String>, Optional<Partition>>> getJsonSerializableModifiedPartitions()
    {
        return JsonSerializableEntry.fromMap(modifiedPartitions);
    }