fitgoodies-logging-log4j/src/main/java/de/cologneintelligence/fitgoodies/log4j/LogHelper.java
public Appender getCaptureAppender(final AppenderAttachable logger,
	                                   final String appenderName) {
		return logger.getAppender(CaptureAppender.getAppenderNameFor(appenderName));
	}
public Appender getCaptureAppender(final AppenderAttachable logger,
	                                   final String appenderName) {
		return logger.getAppender(CaptureAppender.getAppenderNameFor(appenderName));
	}
Returns the CaptureAppender which captures <code>appenderName</code>.

@param logger       logger to use
@param appenderName name of existing appender
@return responsible CaptureAppender