class LanguageEditForm

class LanguageEditForm extends LanguageFormBase {
    
    /**
     * {@inheritdoc}
     */
    public function getFormId() {
        // @todo Remove in favor of base method.
        return 'language_admin_edit_form';
    }
    
    /**
     * {@inheritdoc}
     */
    public function form(array $form, FormStateInterface $form_state) {
        $this->commonForm($form);
        return parent::form($form, $form_state);
    }
    
    /**
     * {@inheritdoc}
     */
    public function actions(array $form, FormStateInterface $form_state) {
        $actions['submit'] = [
            '#type' => 'submit',
            '#value' => $this->t('Save language'),
            '#validate' => [
                '::validateCommon',
            ],
            '#submit' => [
                '::submitForm',
                '::save',
            ],
        ];
        return $actions;
    }
    
    /**
     * {@inheritdoc}
     */
    public function save(array $form, FormStateInterface $form_state) {
        parent::save($form, $form_state);
        $form_state->setRedirectUrl($this->entity
            ->toUrl('collection'));
        $this->logger('language')
            ->notice('The %language (%langcode) language has been updated.', [
            '%language' => $this->entity
                ->label(),
            '%langcode' => $this->entity
                ->id(),
        ]);
    }

}