This property is intentionally not named 'IsEmpty', as such name has a different common definition (for a range that represents an empty set), and OpcLabs.EasyOpc.UA.DataAccess.UARange cannot represent such a range at all (again, intentionally).
Requirements
Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows