/**
  * This method looks for all known GraphingStatisticsAppenders and returns their names.
  *
  * @return The list of known GraphingStatisticsAppender names.
  */
 protected List<String> getAllKnownGraphNames() {
   List<String> retVal = new ArrayList<String>();
   for (GraphingStatisticsSink appender : GraphingStatisticsSink.getAllGraphingStatisticsSinks()) {
     retVal.add(appender.getName());
   }
   return retVal;
 }
 /**
  * Finds the specified graph by using the {@link
  * org.perf4j.log4j.GraphingStatisticsAppender#getAppenderByName(String)} method to find the
  * appender with the specified name.
  *
  * @param name the name of the GraphingStatisticsAppender whose chart generator should be
  *     returned.
  * @return The specified chart generator, or null if no appender with the specified name was
  *     found.
  */
 protected StatisticsChartGenerator getGraphByName(String name) {
   GraphingStatisticsSink sink = GraphingStatisticsSink.getSinkByName(name);
   return (sink == null) ? null : sink.getChartGenerator();
 }