testGenerate.php

<?php

use Drupal\Core\Render\BubbleableMetadata;
use Drupal\node\Entity\Node;

$node = Node::load(106);
$token_service = \Drupal::service('token');

$tokens = array(
  'field_sample_boolean' => '[node:field_sample_boolean]',
  'field_sample_comments' => '[node:field_sample_comments]',
  'field_sample_date' => '[node:field_sample_date]',
  'field_sample_email' => '[node:field_sample_email]',
  'field_sample_float' => '[node:field_sample_float]',
  'field_sample_geolocation' => '[node:field_sample_geolocation]',
  'field_sample_link' => '[node:field_sample_link]',
  'field_sample_list' => '[node:field_sample_list]',
  'field_sample_metatags' => '[node:field_sample_metatags]',
  'field_sample_reference' => '[node:field_sample_reference]',
  'field_sample_reference_file' => '[node:field_sample_reference_file]',
  'field_sample_text_list' => '[node:field_sample_text_list]',
  'field_slug' => '[node:field_slug]',
);
$bubbleable_metadata = new BubbleableMetadata();
$replacements = $token_service->generate('node', $tokens, array('node' => $node), array(), $bubbleable_metadata);
$a = 'b';