Using lambdas in Java 8 looks pretty much exactly like your example.

The line you quote from the article is about a proposed way of declaring lambda types, where instead of

    private Foo MyMethod(string str, Func<Bar, string, int> func) {
      //...
    }

you could write something like

    private Foo MyMethod(string str, (string,int)->Bar func) {
      //...
    }