code: protected function renderV2()
      {
          if ('google' == $this->requestSource) {
              $out = [
                  'basicCard' => [],
                  'platform'  => $this->v2PlatformMap[$this->requestSource],
              ];
  
              if ($this->imageUrl) {
                  $out['basicCard']['image'] = [
                      'imageUri'          => $this->imageUrl,
                      'accessibilityText' => 'accessibility text',
                  ];
              }
  
              return $out;
          } else {
              $out = [
                  'image'    => [],
                  'platform' => $this->v2PlatformMap[$this->requestSource],
              ];
  
              if ($this->imageUrl) {
                  $out['image']['imageUri'] = $this->imageUrl;
              }
  
              return $out;
          }
      }
docs: Render response as array for API V2.
  
  @return array