supports
  True if this utility network can query associations, false otherwise. Access to the system-defined associations table is required to enable querying associations.
The associations table is available for a utility network if:
- Utility network feature service grants access to the association table 
- Partial or full utility network model was requested when replica geodatabase was created 
- Association table was included with the stand-alone geodatabase exported from ArcGIS Pro 
Since
200.1.0