code: function bundle (file, options) {
    api.bundle(file, options)
      .then((bundled) => {
        if (options.outfile) {
          console.log("Created %s from %s", options.outfile, file);
        }
        else {
          // Write the bundled API to stdout
          console.log(bundled);
        }
      })
      .catch(errorHandler);
  }
docs: Bundles a multi-file API definition
  
  @param {string} file - The path of the file to validate
  @param {object} options - Validation options