I have a diagram with groups. I want the groups to be in front of the
other elements in the diagram except for the links between the objects
in the diagram and the objects in the group. Those links should be
under the nodes in the diagram and in front of the groups.
For the things to be more clear in terms of z-index it should be like this:
groups : z-index = 0 (only the drawing of the group shape not the objects in it)
links : z-index = 1
objects not in group: z-index = 2
objects in group: z-index = 3
Is this possible? Thank you for your time.