--- /dev/null
+<?php
+
+namespace DrupalCodeGenerator\Command\Drupal_8\Service;
+
+use DrupalCodeGenerator\Command\BaseGenerator;
+use DrupalCodeGenerator\Utils;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Question\Question;
+
+/**
+ * Implements d8:service:twig-extension command.
+ */
+class TwigExtension extends BaseGenerator {
+
+ protected $name = 'd8:service:twig-extension';
+ protected $description = 'Generates Twig extension service';
+ protected $alias = 'twig-extension';
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function interact(InputInterface $input, OutputInterface $output) {
+ $questions = Utils::defaultQuestions();
+ $default_class = function ($vars) {
+ return Utils::camelize($vars['name'] . 'TwigExtension');
+ };
+ $questions['class'] = new Question('Class', $default_class);
+
+ $this->collectVars($input, $output, $questions);
+
+ $this->addFile()
+ ->path('src/{class}.php')
+ ->template('d8/service/twig-extension.twig');
+
+ $this->addServicesFile()
+ ->template('d8/service/twig-extension.services.twig');
+ }
+
+}