API 'variant.getPackageLibrary()' is obsolete and has been replaced....

[xiongdi9456]

I got some warning message like this, should we do something?

WARNING: API 'variant.getPackageLibrary()' is obsolete and has been replaced with 'variant.getPackageLibraryProvider()'.
It will be removed at the end of 2019.
For more information, see https://d.android.com/r/tools/task-configuration-avoidance.
To determine what is calling variant.getPackageLibrary(), use -Pandroid.debug.obsoleteApi=true on the command line to display more information.
Affected Modules: flutter_google_ad_manager

Gradle version: 5.1.1