错误:找不到符号:变量Build.VERSION\u CODES.O\u MR1

我正在尝试实现一个本机模块,它在react native中提供连接服务。但我面临一个错误。由于我不是android/java开发人员,我无法找到以下错误的原因。

E:\projects\deets-mobile-cp\node_modules\react-native-connection-service\android\src\main\java\com\genm\CallConnection.java:10: error: cannot find symbol
    @TargetApi(Build.VERSION_CODES.O_MR1)
                                  ^
      symbol:   variable O_MR1
      location: class VERSION_CODES
    E:\projects\deets-mobile-cp\node_modules\react-native-connection-service\android\src\main\java\com\genm\CallConnection.java:14: error: cannot find symbol
            setConnectionProperties(PROPERTY_SELF_MANAGED);
                                    ^
      symbol:   variable PROPERTY_SELF_MANAGED
      location: class CallConnection

package com.genm;

import android.annotation.TargetApi;
import android.os.Build;
import android.telecom.Connection;
import android.util.Log;

import static android.content.ContentValues.TAG;

@TargetApi(Build.VERSION_CODES.O_MR1)
public class CallConnection extends Connection{

    public CallConnection(){
        setConnectionProperties(PROPERTY_SELF_MANAGED);
        setAudioModeIsVoip(true);
    }

    @Override
    public  void onAnswer(){
        Log.d(TAG, "On answer to the call");
    }

}