private void CreateCallableTypeBeginInvokeExtensions(AnonymousCallableType anonymousType, Method beginInvoke)
{
ClassDefinition extensions = TypeSystemServices.GetCompilerGeneratedExtensionsClass();
extensions.Members.Add(CreateBeginInvokeCallbackOnlyExtension(anonymousType, beginInvoke));
extensions.Members.Add(CreateBeginInvokeSimplerExtension(anonymousType, beginInvoke));
}