How to add view below navigation bar to extend scroll edge effect

Hello! What UIKit API enables you to add a view below the navigation bar and extend the scroll edge effect below it in iOS 26? safeAreaBar is how you do it in SwiftUI but I need to achieve this design in my UIKit app (which has a collection view in a view controller in a navigation controller).

struct ContentView: View {
    let segments = ["First", "Second", "Third"]
    @State private var selectedSegment = "First"
    
    var body: some View {
        NavigationStack {
            List(0..<50, id: \.self) { i in
                Text("Row \(i + 1)")
            }
            .safeAreaBar(edge: .top) {
                Picker("Segment", selection: $selectedSegment) {
                    ForEach(segments, id: \.self) {
                        Text($0)
                    }
                }
                .pickerStyle(.segmented)
                .padding(.horizontal)
                .padding(.bottom, 8)
            }
            .navigationTitle("Title")
            .navigationBarTitleDisplayMode(.inline)
        }
    }
}