<PackageReference Include="System.Security.Permissions" Version="10.0.1" />

System.Security.Permissions.ReflectionPermission

Controls access to non-public types and members through the Reflection APIs. Controls some features of the Emit APIs.
namespace System.Security.Permissions { public sealed class ReflectionPermission : CodeAccessPermission, IUnrestrictedPermission { public ReflectionPermissionFlag Flags { get; set; } public ReflectionPermission(PermissionState state); public ReflectionPermission(ReflectionPermissionFlag flag); public bool IsUnrestricted(); } }