presto-hive/src/main/java/io/prestosql/plugin/hive/util/HiveBucketing.java/HiveBucketing/HiveBucketFilter
class HiveBucketing:        @JsonCreator
        public HiveBucketFilter(@JsonProperty("bucketsToKeep") Set<Integer> bucketsToKeep)
        {
            this.bucketsToKeep = bucketsToKeep;
        }