Is it possible in the diagram openapi to have nested nodes?
I am trying to create a diagram for JPDL (java process definition language used in JBoss jBPM framework).
I need to show superstates which are collections of states.
I also need to be able create edges from a node in any hierarchy to another node in possibly another hierarchy (e.g. from a state in a superstate to either a top level state or to a state in another superstate).