Whether the plugin should be not selectable in the UI.
If it's set to TRUE, you can still use it via the API in config files.
Type: bool
File
core/modules/views/src/Annotation/ViewsArgumentValidator.php, line 48
Class
ViewsArgumentValidator Defines a Plugin annotation object for views argument validator plugins.
Namespace
Drupal\views\Annotation
Code
public $no_ui;