presto-main/src/main/java/io/prestosql/sql/planner/planprinter/IoPlanPrinter.java/FormattedDomain/equals
class FormattedDomain:        @Override
        public boolean equals(Object obj)
        {
            if (this == obj) {
                return true;
            }
            if (obj == null || getClass() != obj.getClass()) {
                return false;
            }
            FormattedDomain o = (FormattedDomain) obj;
            return Objects.equals(nullsAllowed, o.nullsAllowed) &&
                    Objects.equals(ranges, o.ranges);
        }