SwiftUI Optional TextField

Can SwiftUI Text Fields work with optional Bindings? Currently this code:

struct SOTestView : View {
    @State var test: String? = "Test"

    var body: some View {
        TextField($test)
    }
}

produces the following error:

Cannot convert value of type 'Binding< String?>' to expected argument type 'Binding< String>'

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

Ultimately the API doesn't allow this - but there is a very simple and versatile workaround:

extension Optional where Wrapped == String {
    var _bound: String? {
        get {
            return self
        }
        set {
            self = newValue
        }
    }
    public var bound: String {
        get {
            return _bound ?? ""
        }
        set {
            _bound = newValue.isEmpty ? nil : newValue
        }
    }
}

This allows you to keep the optional while making it compatible with Bindings:

TextField($test.bound)