<PackageReference Include="Microsoft.Win32.Registry" Version="5.0.0-preview.2.20160.6" />

Microsoft.Win32.SafeHandles.SafeRegistryHandle

public sealed class SafeRegistryHandle : SafeHandleZeroOrMinusOneIsInvalid
Represents a safe handle to the Windows registry.
namespace Microsoft.Win32.SafeHandles { public sealed class SafeRegistryHandle : SafeHandleZeroOrMinusOneIsInvalid { public SafeRegistryHandle(IntPtr preexistingHandle, bool ownsHandle); } }