docs: def find_field_by_id(browser, field_type, id):
      """
      Locate the control input with the given ``id``.
  
      :param browser: ``world.browser``
      :param string field_type: a field type (i.e. `button`)
      :param string id: ``id`` attribute
  
      Returns: an :class:`ElementSelector`
      """
      return ElementSelector(
          browser,
          xpath=field_xpath(field_type, 'id') % string_literal(id),
          filter_displayed=True,
      )