Though above warning was informed by MS long time back but it has introduced in latest version of AL.
With the update of new version of AL extension this warning is populated in AL code.
Once you update above AL language version then you will find below warning
Now this warning will become error in near future that means we need to correct it anyhow . If your app contain more than 100 pages then it will be too much efforts to make it manually and tedious task.
To make it superfast work we have one extension available in marketplace which will help you to resolve it within seconds.
Once you install the extension then Press ‘F1’ and run following command
‘Fix Implicit with usages’
Just have look at the following file
Now run above command and relax as it will fix the warning in all pages.