Class Choice

// Create a new form and add a multiple-choice item.
const form = FormApp.create('Form Name');
const item = form.addMultipleChoiceItem();
item.setTitle('Do you prefer cats or dogs?').setChoices([
  item.createChoice('Cats', FormApp.PageNavigationType.CONTINUE),
  item.createChoice('Dogs', FormApp.PageNavigationType.RESTART),
]);

// Add another page because navigation has no effect on the last page.
form.addPageBreakItem().setTitle('You chose well!');

// Log the navigation types that each choice results in.
const choices = item.getChoices();
for (let i = 0; i < choices.length; i++) {
  Logger.log(
      'If the respondent chooses "%s", the form will %s.',
      choices[i].getValue(),
      choices[i].getPageNavigationType(),
  );
}