Sample Burp Extension code to extract response markers

BurpExtender.java

package burp;

import java.util.List;

public class BurpExtender implements IBurpExtender
{

    @Override
    public void registerExtenderCallbacks(IBurpExtenderCallbacks callbacks)
    {
        IScanIssue[] issues = callbacks.getScanIssues("");
        for(IScanIssue issue : issues) {
            IHttpRequestResponse[] messages = issue.getHttpMessages();
            for(IHttpRequestResponse message : messages) {
                if(message instanceof IHttpRequestResponseWithMarkers) {
                    IHttpRequestResponseWithMarkers messageMarkers = (IHttpRequestResponseWithMarkers) message;
                    List<int[]> responseMarkers = messageMarkers.getResponseMarkers();
                    for(int[] marker : responseMarkers) {
                        callbacks.printOutput(String.format("%d - %d", marker[0], marker[1]));
                    }
                }
            }
        }
    }
}