SwiftUI Optional TextField : <p>Can SwiftUI Text Fields work with optional Bindings? Currently this code:</p>

<pre><code>struct SOTestView : View {
    @State var test: String? = "Test"

    var body: some View {
        TextField($test)
    }
}
</code></pre>

<p>produces the following error:</p>

<blockquote>
  <p>Cannot convert value of type 'Binding&lt; String?>' to expected argument type 'Binding&lt; String>'</p>
</blockquote>

<p>Is there any way around this? Using Optionals in data models is a very common pattern - in fact it's the default in Core Data so it seems strange that SwiftUI wouldn't support them</p>
