I want to display the results of a search in SwiftData and replace the data.

Sorry for the elementary question.
In the following case in SwiftData, can I display the results of the search and replace text = "Test" with text = "Test2"?

// Serch
        let test = #Predicate<GroupItem> { testitem in
            testitem.text.contains("Test")
        }

I'm having trouble understanding the database because I can't replace the data that I searched for to see if the search was successful or not.

@Model
class Item {
  var id: Int
  var groupItem: [GroupItem]?
   
  init(id: Int) {
    self.id = id
  }
}

@Model
class GroupItem {
  var groupId: Int
  var text: String
   
  init(groupId: Int, text:String) {
    self.groupId = groupId
    self.text = text
  }
}

struct ContentView: View {
    @Environment(\.modelContext) private var modelContext
    @Query private var items: [Item]

    var body: some View {
        NavigationSplitView {
            List {
                ForEach(items) { item in
                    NavigationLink {
                        Text("Item at \(item.id)")
                    } label: {
                        Text("\(item.id)")
                    }
                }
                .onDelete(perform: deleteItems)
            }
            .toolbar {
                ToolbarItem(placement: .navigationBarTrailing) {
                    EditButton()
                }
                ToolbarItem {
                    Button(action: addItem) {
                        Label("Add Item", systemImage: "plus")
                    }
                }
                ToolbarItem {
                    Button(action: serchItems) {
                        Text("Serch")
                    }
                }
            }
        } detail: {
            Text("Select an item")
        }
    }

    private func addItem() {
        withAnimation {
            let newItem = Item(id: 0 + 1)
            let newItem2 = GroupItem(groupId: 0 + 1, text: "Test")
            modelContext.insert(newItem)
            modelContext.insert(newItem2)
        }
    }

    private func deleteItems(offsets: IndexSet) {
        withAnimation {
            for index in offsets {
                modelContext.delete(items[index])
            }
        }
    }
    
    private func serchItems() {
        // Serch
        let test = #Predicate<GroupItem> { testitem in
            testitem.text.contains("Test")
        }
    }
}

#Preview {
    ContentView()
        .modelContainer(for: Item.self, inMemory: true)
        .modelContainer(for: GroupItem.self, inMemory: true)
}