Display values adding to the FormData object and remove

I have often tried to debug an instance of the FormData object, but I can not see the values stored by the append method.

I tried this:

f = new FormData();

f.append('name', 'Wallace Maxters');

f.append('image', $('#file').prop('files')[0]);

// tento obter o conteúdo adicionando

f.toString() //"[object FormData]"

console.log(f['name']) // undefined

How can I view the values I have stored inside an instance of the FormData object? Is there any way to do this?

How would you remove the value "name" by adding it to the example object above?