Drupal 8 - Create taxonomy terms with translations programmatically

module.install

// The languages array.
$languages = [
  'dutch' => [
    'label' => 'Dutch',
    'translations' => [
      'nl' => 'Nederlands',
      'de' => 'Niederländisch',
    ],
  ],
  'english' => [
    'label' => 'English',
    'translations' => [
      'nl' => 'Engels',
      'de' => 'Englisch',
    ],
  ],
  'spanish' => [
    'label' => 'Spaans',
    'translations' => [
      'nl' => 'Spaans',
      'de' => 'Spanisch',
    ],
  ],
  'italian' => [
    'label' => 'Italian',
    'translations' => [
      'nl' => 'Italiaans',
      'de' => 'Italienisch',
    ],
  ],
  'german' => [
    'label' => 'German',
    'translations' => [
      'nl' => 'Duits',
      'de' => 'Deutsch',
    ],
  ],
  'french' => [
    'label' => 'French',
    'translations' => [
      'nl' => 'Frans',
      'de' => 'Französisch',
    ],
  ],
  'portugese' => [
    'label' => 'Portuguese',
    'translations' => [
      'nl' => 'Portugees',
      'de' => 'Portugiesisch',
    ],
  ],
  'russian' => [
    'label' => 'Russian',
    'translations' => [
      'nl' => 'Russisch',
      'de' => 'Russisch',
    ],
  ],
  'swedish' => [
    'label' => 'Swedish',
    'translations' => [
      'nl' => 'Zweeds',
      'de' => 'Schwedisch',
    ],
  ],
  'chinese' => [
    'label' => 'Chinese',
    'translations' => [
      'nl' => 'Chinees',
      'de' => 'Chinesisch',
    ],
  ],
  'arabic' => [
    'label' => 'Arabic',
    'translations' => [
      'nl' => 'Arabisch',
      'de' => 'Arabisch',
    ],
  ],
  'japanese' => [
    'label' => 'Japanese',
    'translations' => [
      'nl' => 'Japans',
      'de' => 'Japanisch',
    ],
  ],
];

// Loop through the languages.
foreach ($languages as $language) {

  // Create the language term.
  $term = Term::create([
    'name' => $language['label'],
    'vid' => 'languages',
    'langcode' => 'en',
  ]);

  // Add all translations.
  foreach ($language['translations'] as $langcode => $translation) {
    $term->addTranslation($langcode, [
      'name' => $translation,
    ]);
  }

  // Save the term.
  $term->save();
}