public static void main(String[] args) {
        new PlusOperatorBenchmark().execute(); // Typical number on my box with Java 7: 1000 ms
        new StringConcatBenchmark().execute(); // Typical number on my box with Java 7: 1150 ms
    }
Make Clover shut up about this in the coverage report.
vespajlib/src/test/java/com/yahoo/text/StringAppendMicroBenchmarkTest.java