code: public final static void addAnnotationToMonomerNotation(PolymerNotation polymer, int position, String annotation) {
  		polymer.getPolymerElements().getListOfElements().get(position).setAnnotation(annotation);
  	}
docs: method to add an annotation to a MonomerNotation
  
  @param polymer
  PolymerNotation
  @param position
  position of the monomerNotation
  @param annotation
  new annotation