presto-kudu/src/main/java/io/prestosql/plugin/kudu/KuduSplit.java/KuduSplit/KuduSplit
class KuduSplit:    @JsonCreator
    public KuduSplit(@JsonProperty("tableHandle") KuduTableHandle tableHandle,
            @JsonProperty("primaryKeyColumnCount") int primaryKeyColumnCount,
            @JsonProperty("serializedScanToken") byte[] serializedScanToken)
    {
        this.tableHandle = requireNonNull(tableHandle, "tableHandle is null");
        this.primaryKeyColumnCount = primaryKeyColumnCount;
        this.serializedScanToken = requireNonNull(serializedScanToken, "serializedScanToken is null");
    }