Returns a short summary for the current formatter settings.
If an empty result is returned, the formatter is assumed to have no configurable settings, and no UI will be provided to display a settings form.
array() A short summary of the formatter settings.
Overrides FormatterBase::settingsSummary
public function settingsSummary() {
$summary = array();
$date = new DrupalDateTime();
$summary[] = t('Format: @display', array(
'@display' => $this
->dateFormat($date, FALSE),
));
return $summary;
}