code: public void setDaysExcluded (final ArrayList <Calendar> days)
    {
      if (days == null)
      {
        m_aExcludeDays = new ArrayList <> ();
      }
      else
      {
        m_aExcludeDays = days;
      }
  
      m_bDataSorted = false;
    }
docs: <p>
  Redefine the list of days excluded. The ArrayList should contain
  <code>Calendar</code> objects.
  </p>