How to get elementId from LightNode?

[e_juma]

I need track down each lights in the Revit. So, when user changes any of them, I can modify them accordingly. So, I need a way to distinguish a light to others. I thought elementId is useful. But LightNode is very simple. I do not figure out how to get elementId from it. 

Can anyone help me?

[jeremytammik · Accepted solution]

LightNode is issued in the custom exporter context. In the same context, you also get things like 'family instance begin' or 'processing element id'. Simply set a breakpoint in each method defined by the custom exporter and see for yourself where the element id associated with the light node pops up.

[e_juma]

Thank you! I will have a try.