I cannot find a good documentation on how to configure attribute propagation.
I mean there is some information here on how it works : https://www.esri.com/arcgis-blog/products/utility-network/electric-gas/exploring-propagation-and-att...
And in the official documentation, there is only a code sample that describes the propagators on an already configured utility network : https://pro.arcgis.com/en/pro-app/latest/arcpy/functions/propagators.htm
Finally, here (https://pro.arcgis.com/en/pro-app/latest/help/data/utility-network/attribute-propagation.htm) it says : The propagators parameter is only available when using Python or creating a variable from a parameter in ModelBuilder.
Can you please provide some python code sample on how to update subnetwork definition and include propagators ? And also can you post a model builder with preconfigured variable parameter ?