public void setLastProgressMessage(String lastProgressMessage) {
		if (StringUtils.isEmpty(lastProgressMessage)) {
			return;
		}
		if (!StringUtils.equals(this.lastProgressMessage, lastProgressMessage)) {
			if (!StringUtils.isEmpty(this.lastProgressMessage)) {
				setProgressMessage(getProgressMessage() + this.lastProgressMessage + "\n");
			}
		}
		this.lastProgressMessage = lastProgressMessage;
	}
Set the last progress message.

@param lastProgressMessage message
ngrinder-core/src/main/java/org/ngrinder/model/PerfTest.java