Tagmanager and datalayer are missing in android-10.0.1

I used the gradle script

    compile "com.google.android.gms:play-services-tagmanager:10.0.1"

But the import content of my application is red

import com.google.android.gms.tagmanager.DataLayer;
import com.google.android.gms.tagmanager.TagManager;

When I tried to find those classes, they didn't exist. Did Google move them elsewhere and they're in fire now?

resolvent:

I can't find any documentation or explanation for this change. After groping and looking at the library delivery dependency, I think adding this dependency will solve the missing import:

compile 'com.google.android.gms:play-services-tagmanager-v4-impl:10.0.1'

Another feasible option is to add a play service with all of the following functions:

compile 'com.google.android.gms:play-services:10.0.1'

However, this will make your API exceed your needs, make your APK larger, and may require you to configure multidex for the device before the lollipop