<PackageReference Include="System.Security.Permissions" Version="10.0.2" />

System.ApplicationIdentity

public sealed class ApplicationIdentity : ISerializable
Provides the ability to uniquely identify a manifest-activated application. This class cannot be inherited.
namespace System { public sealed class ApplicationIdentity : ISerializable { public string FullName { get; } public string CodeBase { get; } public ApplicationIdentity(string applicationIdentityFullName); } }