@Override
			public Map<String, Object> getStatisticsData() {
				Map<String, Object> newMap = new HashMap<String, Object>();
				Map<Object, Object> errorMap = new HashMap<Object, Object>();
				errorMap.put("Tests", testCount);
				errorMap.put("Errors", errorCount);
				newMap.put("totalStatistics", errorMap);
				return newMap;
			}
Returns a free port number on localhost, or -1 if unable to find a free port.

@return a free port number on localhost, or -1 if unable to find a free port
ngrinder-core/src/test/java/net/grinder/SingleConsoleTest.java