code: private void executeMask(final LogMsgGroup group) {
  		if (masker != null) {
  			if (group.getMsgs().size() > 0) {
  				for (LogMsg logMsg : group.getMsgs()) {
  					if (logMsg.getEx() != null) {
  						executeMask(logMsg.getEx().getError());
  					}
  					logMsg.setData(masker.mask(logMsg.getData()));
  					logMsg.setMsg(masker.mask(logMsg.getMsg()));
  				}
  			}
  		}
  	}
docs: Applies masking to passed in LogMsgGroup.