docs: protected void createMultiLocationViolation(CxxReportIssue message) {
      SourceFile sourceFile = getSourceFile();
      Set<CxxReportIssue> messages = getMultiLocationCheckMessages(sourceFile);
      if (messages == null) {
        messages = new HashSet<>();
      }
      messages.add(message);
      setMultiLocationViolation(sourceFile, messages);
    }