API 'variant.getJavaCompile()' is obsolete

[ehsanTC]

I am using this library codes in my project. Recently i upgraded gradle to the latest version that is:
Gradle plugin version: 3.4.2
Gradle version: 5.1.1

When project gradle syncing is terminated, a warning is raised:

WARNING: API 'variant.getJavaCompile()' is obsolete and has been replaced with 'variant.getJavaCompileProvider()'. It will be removed at the end of 2019.

Unfortunately, no special line of code is selected by IDE as a hint to remove the warning.
How can i remove this bothering warning? Thanks