As pointed out in issue #78, the material property groups, such as
"Basic" for the material "medium 1" in the demo model, did not show up
in the model tree as displayed by mph.tree(). We also could not
access those properties via the Node.property() method.
We fix that by also considering "property groups" (in addition to
"feature groups") as Java containers for children of a given node
when traversing the model tree.
As pointed out in issue #78, the material property groups, such as "Basic" for the material "medium 1" in the demo model, did not show up in the model tree as displayed by
mph.tree(). We also could not access those properties via theNode.property()method.We fix that by also considering "property groups" (in addition to "feature groups") as Java containers for children of a given node when traversing the model tree.