SilverStripe\Versioned\GraphQL\Extensions\SchemaScaffolderExtension::onBeforeAddToManager
If any types are using Versioned, make sure Member is added as a type. Because the Versioned_Version object is just ViewableData, it has to be added explicitly.
Signature
public function onBeforeAddToManager(Manager
$manager )
Parameters
$manager
— SilverStripe\GraphQL\Manager