presto-main/src/main/java/io/prestosql/sql/planner/planprinter/IoPlanPrinter.java/IoPlanPrinter/FormattedDomain
class IoPlanPrinter:        @JsonCreator
        public FormattedDomain(
                @JsonProperty("nullsAllowed") boolean nullsAllowed,
                @JsonProperty("ranges") Set<FormattedRange> ranges)
        {
            this.nullsAllowed = nullsAllowed;
            this.ranges = ImmutableSet.copyOf(requireNonNull(ranges, "ranges is null"));
        }