code: public final static void addAnnotationToConnection(final int position, final String annotation,
  			final HELM2Notation helm2notation) {
  		helm2notation.getListOfConnections().get(position).setAnnotation(annotation);
  	}
docs: method to add an annotation to a connection of the HELM2Notation
  
  @param position
  position of the connection
  @param annotation
  new annotation
  @param helm2notation
  input HELM2Notation