[bpel-dev] Model extensibility

["Ralf Weinand" <weinanr@xxxxxxxxxxxxxxx>]

Hello,

I would like to add a custom model element to the bpel model (and via paletteExtensionpoint to the bpel editor, too).
This custom element will probably be a sequence activity which aggregates some other activities.

Is there an extension point defined to define a custom activity or do I have to modify the model itself for this purpose?
I don´t want to modify any code though, but extend the bpel editor via plugins only if possible.

Cheers
Ralf