[ObsoleteAttribute("This property is deprecated in Revit 2021. Use GetElectricalSystems() method instead, which returns a standard .NET collection.")]
public ElectricalSystemSet ElectricalSystems { get; }

<ObsoleteAttribute("This property is deprecated in Revit 2021. Use GetElectricalSystems() method instead, which returns a standard .NET collection.")> _
Public ReadOnly Property ElectricalSystems As ElectricalSystemSet
	Get

[ObsoleteAttribute(L"This property is deprecated in Revit 2021. Use GetElectricalSystems() method instead, which returns a standard .NET collection.")]
public:
property ElectricalSystemSet^ ElectricalSystems {
	ElectricalSystemSet^ get ();
}