void AddErrorsChanged()
{
var eventDefinition = new EventDefinition(NotifyDataErrorInfoFinder.InterfaceRef.FullName + ".ErrorsChanged", EventAttributes.SpecialName, NotifyDataErrorInfoFinder.ErrorsChangedEventType)
{
AddMethod = GetAdd(),
RemoveMethod = GetRemove(),
};
TypeDefinition.Events.Add(eventDefinition);
}