code: function formatError(error) {
          function localize(key) {
              if (Strings[key]) {
                  return Strings[key];
              }
              console.log("Unknown installation error", key);
              return Strings.UNKNOWN_ERROR;
          }
  
          if (Array.isArray(error)) {
              error[0] = localize(error[0]);
              return StringUtils.format.apply(window, error);
          } else {
              return localize(error);
          }
      }
docs: Converts an error object as returned by install(), installFromPath() or
  installFromURL() into a flattened, localized string.
  
  @param {string|Array.<string>} error
  @return {string}