Assert.assertTrue("reference is null", reference != null);
Assert.assertTrue("reference metering session is null", reference != null);
	public void evaluate(MeteringSession session) {		MeteringSession reference= getReferenceSession(session.getProperty(PerfMsrConstants.TESTNAME_PROPERTY), session.getProperty(PerfMsrConstants.HOSTNAME_PROPERTY));		Assert.assertTrue("reference is null", reference != null); //$NON-NLS-1$				StatisticsSession referenceStats= new StatisticsSession(reference);		StatisticsSession measuredStats= new StatisticsSession(session);				StringBuffer failMesg= new StringBuffer("Performance criteria not met when compared to driver '" + reference.getProperty(PerfMsrConstants.DRIVER_PROPERTY) + "' from " + reference.getProperty(PerfMsrConstants.RUN_TS_PROPERTY) + ":"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$		boolean pass= true;		for (int i= 0; i < fCheckers.length; i++) {			pass &= fCheckers[i].test(referenceStats, measuredStats, failMesg);		}				Assert.assertTrue(failMesg.toString(), pass);	}