Örnek
Şöyle yaparız.
Şöyle yaparız.
ImmutableTable<Region, Country, ImmutableList<City>> immutableTable = RECORDS.stream()
.collect(toImmutableTable(
r -> r.getRegion(),
r -> r.getCountry(),
r -> ImmutableList.of(r.getCity()),
(l, l2) -> ImmutableList.<City>builder().addAll(l).addAll(l2).build()
));
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