*
* @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) {
GraphingStatisticsAppender appender = GraphingStatisticsAppender.getAppenderByName(name);
return (appender == null) ? null : appender.getChartGenerator();
}