How to access debug parameter "Trail Name" and "node_id" in model tree

Dear community,

in CREO 4 inside the model tree definition (Model Tree Columns) I found a type called "Debug". Beside others I can show "Trail Name" and "node_id" for each feature in the model tree.

Does anybody know where those parameters are stored? I was not able to access them on a feature or model level. I would like to access these two parameters inside OTK java/JLink, so I have to know where they are stored.

Thank you and kind regards

Michael