XML Commenting -- How to properly mark a see also tag?

I have the following and I'm not sure how to properly reference this in my XML commenting:

public static class FooExtensions
{
    public static Nullable<T> FooX<T>(this Nullable<T> foo) { ... }
}


public class Bar
{
    /// <summary>
    /// Bar Function
    /// </summary>
    /// <seealso cref="??"/>
    public void BarFunc() { ... }
}

So, my guess is <seealso cref="M:MyNamespace.FooExtensions.FooX{T}(this Nullable{T} f开发者_StackOverflow社区oo)"/>, but I'm not 100% if that's correct. Does anyone know?

Oh, and I have the ECMA PDF document, but I still can't really figure it out even with that.

You don't need to mark the this portion of the parameter, nor the name of it, so you should be able to use this:

<seealso cref="MyNamespace.FooExtensions.FooX{T}(Nullable{T})"/>