@StringGetter(EVENTS_FILE_FORMAT)
 private String getEventsFileFormatAsString() {
   boolean isFirst = true;
   StringBuilder str = new StringBuilder();
   for (EventsFileFormat format : this.eventsFileFormats) {
     if (!isFirst) {
       str.append(',');
     }
     str.append(format.toString());
     isFirst = false;
   }
   return str.toString();
 }
 @StringSetter(EVENTS_FILE_FORMAT)
 private void setEventFileFormats(final String value) {
   String[] parts = StringUtils.explode(value, ',');
   Set<EventsFileFormat> formats = EnumSet.noneOf(EventsFileFormat.class);
   for (String part : parts) {
     String trimmed = part.trim();
     if (trimmed.length() > 0) {
       formats.add(EventsFileFormat.valueOf(trimmed));
     }
   }
   this.eventsFileFormats = formats;
 }