Creating a Start Point for Utility Network Model trace via ArcPy - Where can I get the Terminal ID data?

[EddX]

Hello, I wish to trace my utility network model via arcpy, to begin a trace from a subnetwork controller, for my start point to be valid I must provide TerminalID data.

When I create a startpoint via Trace locations (No. 1. red underline in picture below) via ArcPro this field is automatically filled (No. 2. red underline in picture below). How would I manually get this data so it can be used in my ArcPy script?

Thanks.