Filter.FilterCommandLine.getVersionNum(versionNames, timeStamps, "v2.1", true);
Filter.FilterCommandLine.getVersionNum(versionNames, timeStamps, "v2.1", true, 0);
	public void testV2_1() {		try {		Filter.FilterCommandLine.getVersionNum(versionNames, timeStamps, "v2.1", true);		assertTrue("Didn't throw IllegalArgumentException", false);		} catch (IllegalArgumentException e) {			// we expected this;		}	}