如何在iOS中更改Chirp的SDK状态？

import ChirpSDK

class ViewController: UIViewController {
    var chirpSDK: ChirpSDK?

    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 初始化SDK
        chirpSDK = ChirpSDK()
        
        // 配置SDK参数
        let config = ChirpConfig()
        config.appKey = "your_app_key"
        config.appSecret = "your_app_secret"
        chirpSDK?.configure(config)
        
        // 启动SDK
        chirpSDK?.start()
    }
    
    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        
        // 暂停SDK
        chirpSDK?.pause()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        
        // 恢复SDK
        chirpSDK?.resume()
    }
    
    deinit {
        // 停止SDK
        chirpSDK?.stop()
    }
}