<PackageReference Include="System.Security.Permissions" Version="10.0.4" />

System.Security.Policy.ApplicationDirectory

public sealed class ApplicationDirectory : EvidenceBase
Provides the application directory as evidence for policy evaluation. This class cannot be inherited.
namespace System.Security.Policy { public sealed class ApplicationDirectory : EvidenceBase { public string Directory { get; } public ApplicationDirectory(string name); public object Copy(); } }