presto-mongodb/src/main/java/io/prestosql/plugin/mongodb/MongoSplit.java/MongoSplit/MongoSplit
class MongoSplit:    @JsonCreator
    public MongoSplit(@JsonProperty("addresses") List<HostAddress> addresses)
    {
        this.addresses = ImmutableList.copyOf(requireNonNull(addresses, "addresses is null"));
    }