code: public HolidayMap getHolidays (final int nYear, @Nullable final String... aArgs)
    {
      return _getHolidays (nYear, m_aConfiguration, aArgs);
    }
docs: Calls
  <code>Set&lt;LocalDate&gt; getHolidays(int year, Configuration c, String... args)</code>
  with the configuration from initialization.