react-native - react native ios AppDelegate.m的一个问题

目前项目中使用了pingpp-react-native这个模块，
他在文档中说到需要在AppDelegate.m中加入以下代码，

//iOS 8 及以下
- (BOOL)application:(UIApplication *)application
            openURL:(NSURL *)url
  sourceApplication:(NSString *)sourceApplication
         annotation:(id)annotation {
    BOOL canHandleURL = [Pingpp handleOpenURL:url withCompletion:nil];
    return canHandleURL;
}
//iOS 9 及以上
- (BOOL)application:(UIApplication *)app
            openURL:(NSURL *)url
            options:(NSDictionary *)options {
    BOOL canHandleURL = [Pingpp handleOpenURL:url withCompletion:nil];
    return canHandleURL;
}

我的AppDelegate.m如下，目前只加了iOS9的代码，请问iOS8的那块代码如何加，看样子是要和RCTLinkingManager那块合并？

#import "AppDelegate.h"

#import <React/RCTBundleURLProvider.h>
#import <React/RCTRootView.h>
#import <React/RCTLinkingManager.h>
#import "SplashScreen.h"
#import "Pingpp.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  // 省略
}

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url
  sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{
  return [RCTLinkingManager application:application openURL:url
                      sourceApplication:sourceApplication annotation:annotation];
}

// 我添加的pingpp iOS9相关代码
- (BOOL)application:(UIApplication *)app
            openURL:(NSURL *)url
            options:(NSDictionary *)options {
  BOOL canHandleURL = [Pingpp handleOpenURL:url withCompletion:nil];
  return canHandleURL;
}

@end