Use getter function

Co-authored-by: Jose Daniel Lara <[email protected]>

src/devices_models/device_constructors/hvdcsystems_constructor.jl

@@ -28,7 +28,7 @@ function construct_device!(
 )
     devices = get_available_components(PSY.InterconnectingConverter, sys)
     add_feedforward_constraints!(container, model, devices)
-    objective_function!(container, devices, model, typeof(network_model).parameters[1])
+    objective_function!(container, devices, model, get_network_formulation(network_model))
     add_constraint_dual!(container, sys, model)
     return
 end