docs: function mapSuites(suite, totalTestsReg, config) {
    const suites = _.compact(_.map(suite.suites, subSuite => (
      mapSuites(subSuite, totalTestsReg, config)
    )));
    const toBeCleaned = Object.assign({}, suite, { suites });
    return cleanSuite(toBeCleaned, totalTestsReg, config);
  }