docs: private static boolean revComparisonsMatch(AbstractExpression e1, AbstractExpression e2) {
          return e1 instanceof ComparisonExpression &&
                  e1.getExpressionType() == ComparisonExpression.reverses.get(e2.getExpressionType()) &&
                  new FilterMatcher(((ComparisonExpression) e1).reverseOperator(), e2).match();
      }