如何在FSCalendar中使用@published和@observed？

import SwiftUI

class CalendarViewModel: ObservableObject {
    @Published var selectedDate: Date = Date()
}

struct CalendarView: View {
    @ObservedObject var viewModel: CalendarViewModel
    
    var body: some View {
        VStack {
            Text("Selected Date: \(viewModel.selectedDate)")
            
            FSCalendarView(selectedDate: $viewModel.selectedDate)
        }
    }
}

struct FSCalendarView: UIViewRepresentable {
    @Binding var selectedDate: Date
    
    func makeUIView(context: Context) -> FSCalendar {
        let calendar = FSCalendar()
        calendar.delegate = context.coordinator
        return calendar
    }
    
    func updateUIView(_ uiView: FSCalendar, context: Context) {
        // Update the selected date
        uiView.select(selectedDate)
    }
    
    func makeCoordinator() -> Coordinator {
        Coordinator(self)
    }
    
    class Coordinator: NSObject, FSCalendarDelegate {
        let parent: FSCalendarView
        
        init(_ parent: FSCalendarView) {
            self.parent = parent
        }
        
        func calendar(_ calendar: FSCalendar, didSelect date: Date, at monthPosition: FSCalendarMonthPosition) {
            // Update the selected date
            parent.selectedDate = date
        }
    }
}