<PackageReference Include="System.Security.Permissions" Version="10.0.0-preview.5.25277.114" />

EnvironmentPermission

Controls access to system and user environment variables. This class cannot be inherited.
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 sealed class EnvironmentPermission : CodeAccessPermission, IUnrestrictedPermission { public EnvironmentPermission(EnvironmentPermissionAccess flag, string pathList) { } public EnvironmentPermission(PermissionState state) { } public void AddPathList(EnvironmentPermissionAccess flag, string pathList) { } public override IPermission Copy() { return null; } public override void FromXml(SecurityElement esd) { } public string GetPathList(EnvironmentPermissionAccess flag) { return null; } public override IPermission Intersect(IPermission target) { return null; } public override bool IsSubsetOf(IPermission target) { return false; } public bool IsUnrestricted() { return false; } public void SetPathList(EnvironmentPermissionAccess flag, string pathList) { } public override SecurityElement ToXml() { return null; } public override IPermission Union(IPermission other) { return null; } } }