docs: function build(projectOptions, buildOptions, outDirsAsync) {
    return kew.all([outDirsAsync, resolveSoyInputFiles(projectOptions)])
        .then(function(results) {
          var outDirs = results[0];
          var soyInputFiles = results[1];
          return compileSoy(projectOptions, buildOptions, outDirs, soyInputFiles);
        });
  }