如何修复出现此错误时的gradle？

我启动了一个新的项目并使用了 fire-base cloud：

apply plugin: 'com.android.application'
apply plugin: 'android-apt'
android {
    compileSdkVersion 28
    buildToolsVersion "28.0.3"
    defaultConfig {
        applicationId "android.example.com.squawker"
        minSdkVersion 16
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}
dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    //noinspection GradleCompatible
    implementation 'com.android.support:appcompat-v7:28.0.0'
    testImplementation 'junit:junit:4.12'
// RecyclerView
implementation 'com.android.support:recyclerview-v7:28.0.0'
// Schematic dependencies for ContentProvider
apt 'net.simonvt.schematic:schematic-compiler:0.6.3'
implementation 'net.simonvt.schematic:schematic:0.6.3'
// Preferences Dependencies
implementation 'com.android.support:preference-v7:28.0.0'
// Firebase dependency
    implementation 'com.google.firebase:firebase-messaging:17.3.4'
}
// Apply the Google Services plugin. Make sure to add the google-services.json file in the app
// folder. You download it from the Firebase console
apply plugin: 'com.google.gms.google-services'

但是出现了以下错误：

警告：API \'variant.getJavaCompile()\' 已过时，请使用 \'variant.getJavaCompileProvider()\'。

它将在2019年底被移除。

更多信息请访问https://d.android.com/r/tools/task-configuration-avoidance。

若要确定是谁在调用 variant.getJavaCompile()，请在命令行使用 -Pandroid.debug.obsoleteApi=true 来显示堆栈跟踪。

受影响模块：app