iOS:如何检测设备辅助功能设置中的“较大辅助功能大小”开关是否处于打开/关闭状态

import UIKit

func isLargeAccessibilityFontEnabled() -> Bool {
    if #available(iOS 11.0, *) {
        return UIAccessibility.isBoldTextEnabled
    } else {
        let preferences = UserDefaults.standard
        let key = "UIAccessibilityIsBoldTextEnabled"
        return preferences.bool(forKey: key)
    }
}

let isLargeFontEnabled = isLargeAccessibilityFontEnabled()
if isLargeFontEnabled {
    print("较大辅助功能大小开关已打开")
} else {
    print("较大辅助功能大小开关已关闭")
}