Where to add dependencyGuard{} closure in project with multi modules & flavors?

[trietbui85]

For example, there are 3 modules in my project: app, utils and feature.
In app, there are also 2 flavor: dev and prod.

So, where should I add the dependencyGuard{} closure? In project-level build.gradle, or in all module-level build.gradle, or only in app > build.gradle?

And moreover, should I update configuration("releaseRuntimeClasspath") to reflect the flavor? It means configuration("prodReleaseRuntimeClasspath") ?