code: public PactDslRequestWithPath matchQuery(String parameter, String regex, List<String> example) {
          requestMatchers.addCategory("query").addRule(parameter, new RegexMatcher(regex));
          query.put(parameter, example);
          return this;
      }
docs: Match a repeating query parameter with a regex.
  
  @param parameter Query parameter
  @param regex     Regular expression to match with each element
  @param example   Example value list to use for the query parameter (unencoded)