code: public function selectable()
      {
          $this->restrictElements(['select' => []]);
          $data = [$this->value, $this->element->find('xpath', "//option[@value='$this->value']")->getText()];
  
          self::debug([
              'Expected: %s',
              'Value: %s',
              'Tag: %s',
          ], [
              $this->expected,
              implode(' => ', $data),
              $this->tag,
          ]);
  
          $this->assert(in_array($this->expected, $data), 'selected');
      }
docs: Ensure option is selected.