<PackageReference Include="System.Security.Permissions" Version="11.0.0-preview.1.26104.118" />

System.Security.Permissions.EnvironmentPermission

Controls access to system and user environment variables. This class cannot be inherited.
namespace System.Security.Permissions { public sealed class EnvironmentPermission : CodeAccessPermission, IUnrestrictedPermission { public EnvironmentPermission(EnvironmentPermissionAccess flag, string pathList); public EnvironmentPermission(PermissionState state); public void AddPathList(EnvironmentPermissionAccess flag, string pathList); public string GetPathList(EnvironmentPermissionAccess flag); public bool IsUnrestricted(); public void SetPathList(EnvironmentPermissionAccess flag, string pathList); } }