Ingests an existing jsPlumb instance into a new Toolkit instance, and turns the instance's Container into a Surface. Every element that is the source or target of a Connection is added to the Toolkit instance as a Node, and every Connection is added as an Edge. You can provide your own functions for determining the
type of Nodes and Edges, if you need to. This method will throw an error if your jsPlumb instance does not have a Container set; it is a requirement for the Surface widget.
When you ingest an existing jsPlumb instance, its
Container is configured to be a
Surface widget, which makes it pannable and zoomable, and the set of Nodes and Edges it is managing are loaded into the Toolkit's data model.