namespace System.Net.Mail { public sealed class SmtpPermission : CodeAccessPermission, IUnrestrictedPermission { public SmtpAccess Access { get; } public SmtpPermission(bool unrestricted); public SmtpPermission(SmtpAccess access); public SmtpPermission(PermissionState state); public void AddPermission(SmtpAccess access); public bool IsUnrestricted(); } }