add class to stavenote?

[Дмитрий Дегтярёв]

hi

i was wondering if there is a way to add class or data attribute to staveNote for accessing through DOM? 

i can set id 

const staveNote = new VF.StaveNote(note);

staveNote.setAttribute('id', note.id);

but 

staveNote.addClass('my-class');

or

staveNote.attrs.classes['my-class'] = true;

doesnt work

Thanks.