[pdf embed api] annotationManager API filterAnnotation()

[tangyun]

Hi, 

I'm currently listening to the annotation delete and add events using the annotationManager. 

I wish to add the filter annotation function. 

If I do my own filtering, then add the filtered annotation list to the PDF, I think I have to reload the PDF since I'm listening to the above events. 

So I wonder if there will be an API function e.g. filterAnnotations() such that when I filter the annotations in the PDF, the events "ANNOTATION_ADDED" or "ANNOTATION_DELETED" won't fire.