presto-main/src/main/java/io/prestosql/sql/planner/optimizations/WindowFilterPushDown.java/WindowFilterPushDown/isEqualRange
class WindowFilterPushDown:        private static boolean isEqualRange(TupleDomain<Symbol> tupleDomain, Symbol symbol, long upperBound)
        {
            if (tupleDomain.isNone()) {
                return false;
            }
            Domain domain = tupleDomain.getDomains().get().get(symbol);
            return domain.getValues().equals(ValueSet.ofRanges(Range.lessThanOrEqual(domain.getType(), upperBound)));
        }