Overrides \Drupal\Core\Entity\EntityListController::buildHeader().
Overrides EntityListController::buildHeader
public function buildHeader() {
$row['title'] = t('Title');
$row['description'] = array(
'data' => t('Description'),
'class' => array(
RESPONSIVE_PRIORITY_MEDIUM,
),
);
$row['operations'] = t('Operations');
return $row;
}