Overrides \Drupal\views\Plugin\views\relationship\RelationshipPluginBase::init().
Overrides RelationshipPluginBase::init
public function init(ViewExecutable $view, DisplayPluginBase $display, array &$options = NULL) {
parent::init($view, $display, $options);
$this->field_info = field_info_field($this->definition['field_name']);
}