code: function writeConfigFile(config, yoRcPath = '.yo-rc.json') {
    let newYoRc = { ...config };
    if (FileUtils.doesFileExist(yoRcPath)) {
      const yoRc = JSON.parse(fs.readFileSync(yoRcPath, { encoding: 'utf-8' }));
      newYoRc = {
        ...yoRc,
        ...config,
        [GENERATOR_NAME]: {
          ...yoRc[GENERATOR_NAME],
          ...config[GENERATOR_NAME]
        }
      };
    }
    fs.writeFileSync(yoRcPath, JSON.stringify(newYoRc, null, 2));
  }
docs: This function writes a Yeoman config file in the current folder.
  @param config the configuration.
  @param yoRcPath the yeoman conf file path