code: public Note[] toArray() {
  	  if (m_notes.size()>0) {
  		  Note[] notes = new Note[m_notes.size()];
  		  return (Note[])m_notes.toArray(notes);
  	  }
  	  else
  		  return null;
    }
docs: Returns notes composing this multinote as an array of notes, sorted
  from the lowest note to the highest one.
  @return Notes composing this multinote as an array of notes, sorted
  from the lowest note to the highest one.