SamplePostProcessor.java

import java.util.List;

import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Service;

import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.servlets.post.Modification;
import org.apache.sling.servlets.post.SlingPostProcessor;

@Component(metatype = false, immediate = true)
@Service
public class SamplePostProcessor implements SlingPostProcessor {
	@Override
	public void process(SlingHttpServletRequest request, List<Modification> modificationList) throws Exception {
		// POST servlet had already made its changes but the session hasn't been commited yet
	}
}