GoogleCloud PubSub NoSuchMethodError：没有虚拟方法shouldDiscardUnkownFields

Question

Desde Android deseo descargar mensajes almacenados en el modulo PubSub de Google Cloud，en el momento de estar realizando el pull se recibe el siguiente error en tiempo de ejecucion：

Android GoogleCloud PubSub NoSuchMethodError: No virtual method shouldDiscardUnkownFields )Z in class Lcom/google/protobuf/CodedInputStream;

El programa usa protobuf，dentrodelcódigodeCodeInputStream esta funcion tiene la forma：

 final boolean shouldDiscardUnknownFields()

¿Porque internamente las dependdencias y el codigo buscan una funcion“virtual”cuando esta definida como“final”？¿que esta pasando？

La funcion donde ocurre el error es este，usando AsyncTask：

    @Override
    protected Integer doInBackground(String...params){
        try{


            Log.d(TAG, "Leyendo archivo de credenciales: "+MainActivity.CREDENTIALS_FILE);
            AssetManager am = context.getAssets();
            InputStream isCredentials =   am.open(MainActivity.CREDENTIALS_FILE);
            ManagedChannel channelImpl = OkHttpChannelBuilder.forAddress("pubsub.googleapis.com",443).negotiationType(NegotiationType.TLS).build();

            Log.d(TAG, "Canal Terminado?:"+ channelImpl.isTerminated());

            GoogleCredentials credential = GoogleCredentials.fromStream(isCredentials);
            credential = credential.createScoped(Arrays.asList("https://www.googleapis.com/auth/pubsub"));


            ExecutorService executor = Executors.newSingleThreadExecutor();
            ClientAuthInterceptor interceptor = new ClientAuthInterceptor(credential, executor);
            Log.d(TAG, "Interceptor: " + interceptor.toString());

            Channel channel = ClientInterceptors.intercept(channelImpl, interceptor);
            Log.d(TAG, "Channel authority: " + channel.authority());


            SubscriberGrpc.SubscriberBlockingStub subscriberStub =  SubscriberGrpc.newBlockingStub(channel);
            PullRequest pullRequest = PullRequest.newBuilder()
                .setSubscription( MainActivity.SUBSCRIPTION )
                .setReturnImmediately( true )
                .setMaxMessages(10)
                .build();

            PullResponse pullResponse = subscriberStub.pull(pullRequest);

            numMessages = pullResponse.getReceivedMessagesCount();
            Log.d(TAG, "Number of messages received: " + String.valueOf(numMessages));
            for (ReceivedMessage message1 :  pullResponse.getReceivedMessagesList()) {
                PubsubMessage pubsubMessage1 = message1.getMessage();
                arrayList.add(pubsubMessage1.toString());
                Log.d(TAG, "Message received (ID="+message1.getAckId()+"): " + pubsubMessage1.toString());
            }

        }catch (IOException e){
            Log.d(TAG, "Excepcion: "+e.toString());
        }
        return 0;
    }

El error ocurre en la linea

 PullResponse pullResponse = subscriberStub.pull(pullRequest);

Este es el gradle

apply plugin: 'com.android.application'
apply plugin: 'com.google.protobuf'

android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "com.example.arkmind_2.googlecloud"
        minSdkVersion 25
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner  "android.support.test.runner.AndroidJUnitRunner"
        multiDexEnabled true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    lintOptions {
        disable 'InvalidPackage', 'HardcodedText'
    }

    configurations.all {
        resolutionStrategy.force 'com.google.code.findbugs:jsr305:1.3.9'
    }
}

sourceSets {
    main.java.srcDirs += "${protobuf.generatedFilesBaseDir}/main/javalite"
}


dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation    'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.android.support:support-annotations:27.1.1'
    compile 'com.google.protobuf:protobuf-java:3.5.1'
    compile 'io.grpc:grpc-okhttp:1.12.0' // CURRENT_GRPC_VERSION
    compile 'io.grpc:grpc-protobuf-lite:1.12.0' // CURRENT_GRPC_VERSION
    compile 'io.grpc:grpc-stub:1.12.0' // CURRENT_GRPC_VERSION
    compile 'io.grpc:grpc-testing:1.12.0' // CURRENT_GRPC_VERSION
    compile 'io.grpc:grpc-auth:1.12.0'
    compile 'com.google.api.grpc:grpc-google-cloud-pubsub-v1:0.1.22'
    compile 'javax.annotation:javax.annotation-api:1.2'
    compile 'junit:junit:4.12'
    compile 'com.google.auth:google-auth-library-oauth2-http:0.9.1'
    androidTestCompile 'com.android.support.test:rules:1.0.1'
    androidTestCompile 'com.android.support.test:runner:1.0.1'
}

protobuf {
    protoc {
        artifact = 'com.google.protobuf:protoc:3.0.0'
    }

    plugins {
        javalite {
            artifact = 'com.google.protobuf:protoc-gen-javalite:3.0.0'
        }
        grpc {
            artifact = 'io.grpc:protoc-gen-grpc-java:1.12.0'
        }
    }

    generateProtoTasks {
        all().each { task ->
            task.builtins {
                remove java
            }
            task.plugins {
                javalite {}
                grpc {
                    option 'lite'
                }
            }
        }
    }
}