Overrides Drupal\views\Plugin\views\field\FieldPluginBase::init().
Overrides FieldPluginBase::init
public function init(ViewExecutable $view, DisplayPluginBase $display, array &$options = NULL) {
parent::init($view, $display, $options);
$this->additional_fields['uid'] = array(
'table' => 'users',
'field' => 'uid',
);
}