presto-cassandra/src/main/java/io/prestosql/plugin/cassandra/CassandraSplit.java/CassandraSplit/CassandraSplit
class CassandraSplit:    @JsonCreator
    public CassandraSplit(
            @JsonProperty("partitionId") String partitionId,
            @JsonProperty("splitCondition") String splitCondition,
            @JsonProperty("addresses") List<HostAddress> addresses)
    {
        requireNonNull(partitionId, "partitionName is null");
        requireNonNull(addresses, "addresses is null");

        this.partitionId = partitionId;
        this.addresses = ImmutableList.copyOf(addresses);
        this.splitCondition = splitCondition;
    }