code: public void setLocale(Locale locale)
    {
      if(locale != null && report != null && report instanceof LocalizableReport) 
      {
        ((LocalizableReport) report).setLocale(locale); 
      }
    }
docs: Allows for a per-instance override of the locale, if supported by the underlying
  {@link Report}. Otherwise takes the default host locale.
  @param locale The overridden locale.