One source of information in a utility network are the tables that make it up
Structure feature classes: StructureLine, StructurePoint, and StructureBoundary
Domain network feature classes: Device, Line, Junction, Assembly, and SubnetLine
Another source of information is the set of associations that have been created
The final source of information are the system junctions that are automatically generated where needed
Network sources should not be confused with subnetwork source, which is a source of resources (e.g., electricity or water). Instances of Source objects can be obtained from UtilityNetworkDefinition and DomainNetwork objects.