Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::settingsForm().
Overrides WidgetBase::settingsForm
public function settingsForm(array $form, array &$form_state) {
$element['display_label'] = array(
'#type' => 'checkbox',
'#title' => t('Use field label instead of the "On value" as label'),
'#default_value' => $this
->getSetting('display_label'),
'#weight' => -1,
);
return $element;
}