.swift

 NavigationView {
            VStack {
                
                List(customers, id: \.self) { customer in
                    NavigationLink(
                        destination: DetailView(customer: customer),
                        label: {
                            HStack {
                                Text(customer)
                                Spacer()
                                
                            }.contentShape(Rectangle())
                        })
                   
                }.listStyle(PlainListStyle())
                
            }
            .onAppear {
               // selectedCustomer = nil
            }
            
            .navigationTitle("Customers")
        }