Uri.php

1. 9.x drupal/core/lib/Drupal/Core/TypedData/Type/Uri.php
2. 9.x drupal/core/modules/file/lib/Drupal/file/Plugin/views/field/Uri.php

<?php

/**
 * @file
 * Definition of Drupal\file\Plugin\views\field\Uri.
 */
namespace Drupal\file\Plugin\views\field;

use Drupal\Core\Annotation\Plugin;

/**
 * Field handler to add rendering file paths as file URLs instead of as internal file URIs.
 *
 * @Plugin(
 *   id = "file_uri",
 *   module = "file"
 * )
 */
class Uri extends File {
  protected function defineOptions() {
    $options = parent::defineOptions();
    $options['file_download_path'] = array(
      'default' => FALSE,
      'bool' => TRUE,
    );
    return $options;
  }
  public function buildOptionsForm(&$form, &$form_state) {
    $form['file_download_path'] = array(
      '#title' => t('Display download path instead of file storage URI'),
      '#description' => t('This will provide the full download URL rather than the internal filestream address.'),
      '#type' => 'checkbox',
      '#default_value' => !empty($this->options['file_download_path']),
    );
    parent::buildOptionsForm($form, $form_state);
  }
  function render($values) {
    $data = $values->{$this->field_alias};
    if (!empty($this->options['file_download_path']) && $data !== NULL && $data !== '') {
      $data = file_create_url($data);
    }
    return $this
      ->render_link($data, $values);
  }

}