<PackageReference Include="System.Security.Permissions" Version="10.0.0-rc.1.25451.107" />

IUnrestrictedPermission

public interface IUnrestrictedPermission
Allows a permission to expose an unrestricted state.
namespace System.Security.Permissions { [Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId = "SYSLIB0003", UrlFormat = "https://aka.ms/dotnet-warnings/{0}")] public interface IUnrestrictedPermission { bool IsUnrestricted(); } }