namespace System
{
public class Exception : ISerializable
{
[Obsolete("BinaryFormatter serialization is obsolete and should not be used. See https://aka.ms/binaryformatter for more information.", DiagnosticId = "SYSLIB0011", UrlFormat = "https://aka.ms/dotnet-warnings/{0}")]
protected event EventHandler<SafeSerializationEventArgsnot null>? SerializeObjectState;
}
}