/**
* Initialize the empty resource field collection to bundle the output.
*
* @param mixed $identifier
* The ID of thing being viewed.
*
* @return ResourceFieldCollectionInterface
* The collection of fields.
*
* @throws \Drupal\restful\Exception\NotFoundException
*/
protected function initResourceFieldCollection($identifier)
{
$resource_field_collection = new ResourceFieldCollection(array(), $this->getRequest());
$interpreter = $this->initDataInterpreter($identifier);
$resource_field_collection->setInterpreter($interpreter);
$id_field_name = empty($this->options['idField']) ? 'id' : $this->options['idField'];
$resource_field_collection->setIdField($this->fieldDefinitions->get($id_field_name));
$resource_field_collection->setResourceId($this->pluginId);
return $resource_field_collection;
}
