for(IResourceDescription.Delta delta : context.getDeltas()) {
IResourceDescription resourceDescription = delta.getNew();
if(resourceDescription != null) {
URI uri = resourceDescription.getURI();
if(uri != null) {
if("pp".equals(uri.fileExtension())) {
Resource r = context.getResourceSet().getResource(uri, true);
List<PPTask> taskList = getTaskList(r);
syncTasks(taskList, uri);
}
}