Navigating through stdlib code I found one functio...

# stdlib

[natario1]

Navigating through stdlib code I found one function annotated like this:

@Suppress("EXTENSION_SHADOWED_BY_MEMBER") // false warning, extension takes precedence in some cases

Does anyone know in which cases the extension takes precedence? This one is Collection<T>.containsAll(elements: Collection<T>) for instance.

[ilya.gorbunov]

containsAll member is chosen only when the argument collection element type is a subtype of the receiver collection element type.
In other cases, containsAll extension is used, e.g.
listOf(1, 2, 3).containsAll(listOf<Any>(1, "string"))