How to use the webpack-dev-server/lib/util/addDevServerEntrypoints function in webpack-dev-server

function startDevServer(webpackOptions, options) {
      addDevServerEntrypoints(webpackOptions, options);
      let compiler;
      try {
        compiler = webpack(webpackOptions);
      } catch (e) {
        if (e instanceof webpack.WebpackOptionsValidationError) {
          console.error(colorError(options.stats.colors, e.message));
          process.exit(1); // eslint-disable-line
        }
        throw e;
      }

      const suffix = options.inline !== false || options.lazy === true ? '/' : '/webpack-dev-server/';

      let server;
      try {
        server = new WebpackDevServer(compiler, options);