Is it possible to set Focus on .searchable in SwiftUI

I am trying to set the focus on the .searchable text entry field using @FocuseState and .focused($focusedField, equals: .search) technique demonstrated by Tanu in her WWDC21-10023 talk, but I'm not sure if it is a focusable element or how to programmatically set it. My attempt:

//based on a technique presented in https://developer.apple.com/videos/play/wwdc2021/1002 and Paul Hudson's article https://www.hackingwithswift.com/quick-start/swiftui/how-to-add-a-search-bar-to-filter-your-data

import SwiftUI

enum Field: Hashable {
  case search
}

struct ContentView: View {
  let itemsToSearch = ["John", "Mark", "Adam", "Carol", "Ismael", "Vanessa", "Aniq"]

  @FocusState private var focusedField: Field?

  @State private var searchText = ""

  var body: some View {
    NavigationView {
      List {
        ForEach(searchResults, id: \.self) { itemsToSearch in
          NavigationLink(destination: Text(itemsToSearch)) {
            Text(itemsToSearch)
          }
        }
      }
      .searchable(text: $searchText, placement: .navigationBarDrawer(displayMode: .always)) {
        ForEach(searchResults, id: \.self) { result in
          Text("\(result)").searchCompletion(result)
        }
        .focused($focusedField, equals: .search)
        .onAppear {
          focusedField = .search
        }
      }
    }
  }

  var searchResults: [String] {
    if searchText.isEmpty {
      return itemsToSearch
    } else {
      return itemsToSearch.filter { $0.contains(searchText) }
    }
  }
}

struct ContentView_Previews: PreviewProvider {
  static var previews: some View {
    ContentView()
  }
}

Can someone clarify if this is possible, and if so, where I am going wrong? Thanks in advance.

Laith