* A closure to call before the fixture is considered ready. The closure is passed the fixture object,
     * as well as a groovy AntBuilder, to enable running ant condition checks. The default wait
     * condition is for http on the http port.
     */
    @Internal
    Closure waitCondition = { AntFixture fixture, AntBuilder ant ->
        File tmpFile = new File(fixture.cwd, 'wait.success')
        ant.get(src: "http://${fixture.addressAndPort}",