code: public void setBase(Point2D base) {
  		m_stemYEndForChord = -1;
  		if (m_normalizedChords!=null) {
              for (JChord m_normalizedChord : m_normalizedChords) {
                  m_normalizedChord.setBase(base);
              }
  		} else {
              for (JNote m_sNoteInstance : m_sNoteInstances) {
                  m_sNoteInstance.setBase(base);
              }
  		}
  		if (m_jGracenotes != null) {
  			m_jGracenotes.setBase(base);
  		}
  		super.setBase(base);
  	}
docs: Sets the base of this chord.