在NSSavePanel上，有没有办法强制显示“隐藏扩展”复选框？

import Cocoa

class CustomAccessoryView: NSView {
    // 在自定义视图上添加一个复选框控件
    let checkbox: NSButton = {
        let checkbox = NSButton(checkboxWithTitle: "隐藏扩展", target: nil, action: nil)
        checkbox.state = .off
        checkbox.translatesAutoresizingMaskIntoConstraints = false
        return checkbox
    }()
    
    override init(frame frameRect: NSRect) {
        super.init(frame: frameRect)
        
        // 添加复选框到自定义视图上
        addSubview(checkbox)
        
        // 设置复选框的约束
        checkbox.leadingAnchor.constraint(equalTo: leadingAnchor).isActive = true
        checkbox.centerYAnchor.constraint(equalTo: centerYAnchor).isActive = true
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
}

// 创建NSSavePanel并设置accessoryView为自定义视图
let savePanel = NSSavePanel()
let accessoryView = CustomAccessoryView(frame: NSRect(x: 0, y: 0, width: 200, height: 30))
savePanel.accessoryView = accessoryView

// 监听复选框状态变化
accessoryView.checkbox.target = savePanel
accessoryView.checkbox.action = #selector(NSSavePanel.checkboxStateChanged(_:))

// 显示NSSavePanel
savePanel.runModal()