presto-thrift-api/src/main/java/io/prestosql/plugin/thrift/api/PrestoThriftBlock.java/PrestoThriftBlock/getHyperLogLogData
class PrestoThriftBlock:    @Nullable
    @ThriftField(value = 9, requiredness = OPTIONAL)
    public PrestoThriftHyperLogLog getHyperLogLogData()
    {
        return hyperLogLogData;
    }