static CallHandler<ReplaceCollectorFix> handler(String collectorName, int parameterCount, String template, boolean changeSemantics) {
      return CallHandler.of(collectorMatcher(collectorName, parameterCount),
                            call -> {
                              return new ReplaceCollectorFix(collectorName, template, changeSemantics);
                            });
    }
static CallHandler<ReplaceCollectorFix> handler(String collectorName, int parameterCount, String template, boolean changeSemantics)