This is very confusing as seen in #12974 or #12906. My suggestion would be "legacy."
config.stableVersion
    );
    replaceInFile(
      GH_PAGES_DIR + "/getting_started/index.html",
      /BETA_VERSION/g,
      config.betaVersion
    );
    
    const groupClass = config.betaVersion ? "btn-group-vertical centered" : "";
    const hiddenClass = config.betaVersion ? "" : "hidden";
    replaceInFile(
      GH_PAGES_DIR + "/getting_started/index.html",
      /GROUP_CLASS/g,
      groupClass
    );
    replaceInFile(
      GH_PAGES_DIR + "/getting_started/index.html",
      /HIDDEN_CLASS/g,
      hiddenClass
    );
    console.log("Done building with wintersmith.");
    done();
  });
});
gulp.task("gh-pages-git", function (done) {
  var VERSION = getVersionJSON().version;
  var reason = process.env.PDFJS_UPDATE_REASON;
  safeSpawnSync("git", ["init"], { cwd: GH_PAGES_DIR });
  safeSpawnSync("git", ["remote", "add", "origin", REPO], {
    cwd: GH_PAGES_DIR,