Module's build gradle

build.gradle

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation "com.android.support:appcompat-v7:$appcompat_version"
  
    testImplementation "junit:junit:$junit_version"
    
    androidTestImplementation "com.android.support.test:runner:$test_runner_version"
}