Retrieving the MethodInfo of of the correct overload of a generic method

I have this type that contains two overloads of a generic method. I like to retrieve one of the overloads (with the Func parameter) using reflection. The problem however is that I can't find the correct parameter type to supply the Type.GetMethod(string, Type[]) method with.

Here is my class definition:

public class Foo
{
    public void Bar<T>(Func<T> f) { }
    public void Bar<T>(Action<T> a) { }
}

And this is what I've come up with, unfortunately without succes:

[TestMethod]
public void Test1()
{
    Type parameterType = typeof(Func<>);

    var method = typeof(Foo).GetMethod("Bar", new Type[] { parameterType });

    Assert.IsNotNull(method); // Fails
}

How can I get the MethodInfo of a generic method of which I know the parameters?