presto-spi/src/main/java/io/prestosql/spi/predicate/SortedRangeSet.java/SortedRangeSet/isAll
class SortedRangeSet:    @Override
    public boolean isAll()
    {
        return lowIndexedRanges.size() == 1 && lowIndexedRanges.values().iterator().next().isAll();
    }