如何等待一个元素，并在一段时间后不会失败xcuitest

import XCTest

func waitForElementToExist(element: XCUIElement, timeout: TimeInterval) {
    let existsPredicate = NSPredicate(format: "exists == true")
    let expectation = XCTNSPredicateExpectation(predicate: existsPredicate, object: element)
    
    let result = XCTWaiter().wait(for: [expectation], timeout: timeout)
    
    if result == .timedOut {
        XCTFail("Element did not appear within the specified timeout")
    }
}

// 在测试用例中使用waitForElementToExist方法
func testExample() {
    let app = XCUIApplication()
    let element = app.buttons["MyButton"]
    
    // 等待元素存在，最多等待5秒
    waitForElementToExist(element: element, timeout: 5)
    
    // 继续执行其他测试步骤
    // ...
}