Appium iOS iOSNsPredicate求值为多个元素如何指定其中之一？

import io.appium.java_client.MobileElement;
import io.appium.java_client.ios.IOSDriver;
import org.openqa.selenium.By;
import org.openqa.selenium.remote.DesiredCapabilities;

public class AppiumExample {
    public static void main(String[] args) {
        // 设置DesiredCapabilities
        DesiredCapabilities caps = new DesiredCapabilities();
        caps.setCapability("platformName", "iOS");
        caps.setCapability("platformVersion", "your_ios_version");
        caps.setCapability("deviceName", "your_device_name");
        caps.setCapability("app", "path_to_your_app");

        // 初始化Appium Driver
        IOSDriver<MobileElement> driver = new IOSDriver<>(new URL("http://127.0.0.1:4723/wd/hub"), caps);

        // 使用iOSNsPredicate找到所有符合条件的元素
        List<MobileElement> elements = driver.findElements(By.iOSNsPredicate("your_predicate"));

        // 指定其中一个元素进行后续操作
        MobileElement element = elements.get(0);
        // 进行其他操作...

        // 关闭Driver
        driver.quit();
    }
}