addFeatureByType

If @feature_type is the type of a class that implements iface@SessionFeature, this creates a new feature of that type and adds it to @session as with method@Session.add_feature. You can use this when you don't need to customize the new feature in any way. Adding multiple features of the same @feature_type is not allowed.

If @feature_type is not a iface@SessionFeature type, this gives each existing feature on @session the chance to accept @feature_type as a "subfeature". This can be used to add new class@Auth types, for instance.

See the main #SoupSession documentation for information on what features are present in sessions by default.

Parameters