code: List<List<Annotation>> getParagraphs(AnnotationType type, String groupID) {
  	List<List<Annotation>> paragraphs = new ArrayList<List<Annotation>>();
  	for (int para : Helper.getIndexKeys(type, groupID, this.paraIndex)) {
  	    paragraphs.add(this.getParaAnnotations(para, type));
  	}
  	return paragraphs;
      }
docs: Return all annotations of type "type" classified into paragraphs