code: public void fireCalendarReadEvent(ProjectCalendar calendar)
     {
        if (m_projectListeners != null)
        {
           for (ProjectListener listener : m_projectListeners)
           {
              listener.calendarRead(calendar);
           }
        }
     }
docs: This method is called to alert project listeners to the fact that
  a calendar has been read from a project file.
  
  @param calendar calendar instance