Migrate BuildConfig to Gradle Build Files

When I build in Android Studio, i get this message:

The option setting 'android.defaults.buildfeatures.buildconfig=true' is deprecated.
The current default is 'false'.
It will be removed in version 9.0 of the Android Gradle plugin.
You can resolve this warning in Android Studio via `Refactor` > `Migrate BuildConfig to Gradle Build Files`

but there is no such option in the Refactor menu

how can I start the Refactor?

I just set manually in the gradle.properties file

 android.defaults.buildfeatures.buildconfig=false

And make the project again, If there are errors resolve them

I got the error

error: cannot find symbol
    int versionCode = BuildConfig.VERSION_CODE;
                      ^

this is my code there:

@Override
public void draw(RenderManager renderManager) {
    // Get app version information
    int versionCode = BuildConfig.VERSION_CODE;
    String versionName = BuildConfig.VERSION_NAME;

so I passed a context (activity) from The GameManager to the CreditsGameScreen, I changed the constructor:

public CreditsGameScreen(GameManager gameManager, Context context) {
    super(gameManager);
    mContext = context;
}

and used this then:

// Method to retrieve version code using PackageManager
private int getVersionCode(Context context) {
    try {
        PackageManager packageManager = context.getPackageManager();
        String packageName = context.getPackageName();
        PackageInfo packageInfo = packageManager.getPackageInfo(packageName, 0);
        return packageInfo.versionCode;
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
        return -1; // Error occurred, return -1 or handle it accordingly
    }
}

// Method to retrieve version name using PackageManager
private String getVersionName(Context context) {
    try {
        PackageManager packageManager = context.getPackageManager();
        String packageName = context.getPackageName();
        PackageInfo packageInfo = packageManager.getPackageInfo(packageName, 0);
        return packageInfo.versionName;
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
        return ""; // Error occurred, return empty string or handle it accordingly
    }
}

public void draw(RenderManager renderManager) {
    // Get app version information
    int versionCode = getVersionCode(mContext);
    String versionName = getVersionName(mContext);
    ...

or shorter:

public void draw(RenderManager renderManager) {
    // Get app version information
    try {
        PackageInfo packageInfo = mContext.getPackageManager().getPackageInfo(mContext.getPackageName(), 0);
        int versionCode = packageInfo.versionCode;
        String versionName = packageInfo.versionName;
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
    }
    ...
}

(The whole app can be seen in https://github.com/Eastcoast-Laboratories/Roboyard/tree/master/app/src/main/java/roboyard/eclabs )