public IReadOnlyList<Function> Functions {get; set;}

{
  // This routine creates an Add function to sum the Load network attribute during a trace
  static void ApplyFunction(UtilityNetworkDefinition utilityNetworkDefinition, TraceConfiguration traceConfiguration)
  {
    // Get a NetworkAttribute object for the Load network attribute from the UtilityNetworkDefinition
    using NetworkAttribute loadNetworkAttribute = utilityNetworkDefinition.GetNetworkAttribute("Load");
    // Create a function to sum the Load
    Add sumLoadFunction = new Add(loadNetworkAttribute);

    // Add this function to our trace configuration
    traceConfiguration.Functions = new List<Function>() { sumLoadFunction };
  }
}