Barcode Detection with the Mobile Vision API Prerequisites

[genifycom]

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The page https://codelabs.developers.google.com/codelabs/bar-codes/#0 shows the prerequisites but they are not hyperlinks.

To make it easier to get started, please include the links to download the necessary pieces.

[genifycom]

Actually the following instructions are not consistent with Android Studio 3.5

The gradle file says

dependencies { implementation fileTree(dir: 'libs', include: ['*.jar']) implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" implementation 'androidx.appcompat:appcompat:1.0.2' implementation 'androidx.core:core-ktx:1.0.2' implementation 'androidx.constraintlayout:constraintlayout:1.1.3' testImplementation 'junit:junit:4.12' androidTestImplementation 'androidx.test:runner:1.1.1' androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1' }

and not

dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) }

Is the difference due to Kotlin, or is it just out of date?