code: public RemoteWebDriverBuilder oneOf(Capabilities maybeThis, Capabilities... orOneOfThese) {
      options.clear();
      addAlternative(maybeThis);
      for (Capabilities anOrOneOfThese : orOneOfThese) {
        addAlternative(anOrOneOfThese);
      }
      return this;
    }
docs: Clears the current set of alternative browsers and instead sets the list of possible choices to
  the arguments given to this method.