如何在swift中更改搜索栏的高度

import UIKit

class CustomSearchBarController: UIViewController {
    
    let searchBar = UISearchBar()
    let containerView = UIView()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 设置容器视图
        containerView.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: 80) // 设置高度为80
        containerView.backgroundColor = .white
        
        // 添加搜索栏到容器视图
        searchBar.frame = CGRect(x: 0, y: 0, width: containerView.frame.width, height: 50) // 搜索栏高度为50
        searchBar.placeholder = "Search"
        containerView.addSubview(searchBar)
        
        // 添加容器视图到控制器视图
        view.addSubview(containerView)
    }
}