Implements \Drupal\field\Plugin\Type\Formatter\FormatterInterface::viewElements().
Overrides FormatterInterface::viewElements
public function viewElements(EntityInterface $entity, $langcode, array $items) {
$elements = array();
foreach ($items as $delta => $item) {
$elements[$delta] = array(
'#markup' => empty($item['uri']) ? '' : file_create_url($item['uri']),
);
}
return $elements;
}