Remove previous stacked Views with SwiftUI about stinsen HOT 4 CLOSED

final class StartCoordinator: NavigationCoordinatable {
    var stack = NavigationStack<StartCoordinator>(initial: \.viewA)
    
    @Root var viewA = makeViewA
    @Route(.push) var viewB = makeViewB
    @Route(.push) var viewC = makeViewC
    @Route(.push) var viewD = makeViewD
    
    @ViewBuilder func makeViewA() -> some View {
        Button("To B") {
            self.route(to: \.viewB)
        }
        .navigationBarTitle("View A")
    }
    
    @ViewBuilder func makeViewB() -> some View {
        Button("To C") {
            self.route(to: \.viewC)
        }
        .navigationBarTitle("View B")
    }
    
    @ViewBuilder func makeViewC() -> some View {
        Button("To D") {
            self.route(to: \.viewD)
        }
        .navigationBarTitle("View C")
    }
    
    @ViewBuilder func makeViewD() -> some View {
        Button("Back to B") {
            try! self.focusFirst(\.viewB)
        }
        .navigationBarTitle("View D")
    }
}