We are using the element templates with the Properties Panel.We love them.
In our case, we are - for example - mapping an element template to an input/output Parameter.
For Strings types this was easy. Now we are trying to realize this with more complex types. (Map)
So, we want to have an element template to create an input/output Parameter of the type Map.
The Map type does not exist yet.
Could you give us a hint, how we could implement this? Is there an extension mechanism for the element templates?
Or better, are you planing to support these data types like Map, List in the near future?