Are there Prefabs in Wonderland Engine?

Is there already some sort of “prefab” like system so that objects with pre-assigned components and child objects can be instantiated into a scene by just a single drag-and-drop?
In Unity, the SteamVR “Player” prefab and Depanther’s “WebXRCameraSet” are heavily used by me - and often feature in my “VR quickstart” demo
So some way to “bundle” an object in the Hierarchy/Scene viewer and all it’s children into a transportable package that could be imported into another project with a minimum of fuss.

Prefabs are high on the list after the rendering features.
You can paste JSON, however, and copying an object results in shareable JSON, too
Before a prefab system we’ll have JSON files that you can drag and drop from the scene view