code: @Override
  	public int consolidateDuplicateIssues(IScanIssue existingIssue, IScanIssue newIssue) {
  		if (existingIssue.getIssueDetail().equals(newIssue.getIssueDetail())) {
  			callbacks.printOutput("DUPLICATE ISSUE! Consolidating...");
  			return -1;
  		} else {
  			return 0;
  		}
  	}
docs: This method is called when multiple issues are reported for the same URL
  path by the same extension-provided check. The value we return from this
  method determines how/whether Burp consolidates the multiple issues to
  prevent duplication.
  
  Since the issue detail is sufficient to identify our issues as different,
  if both issues have the same name, only report the existing issue
  otherwise report both issues
  
  @param existingIssue Existing reported issue to compare
  @param newIssue New issue to compare
  @return Zero if the issues are different, or -1 if they are the same