For instance: ``` public inline fun <T> Coll...

# language-proposals

[egslava]

For instance:

public inline fun <T> Collection<T>?.hasEntries(): Boolean = this != null && !this.isEmpty()
fun foo(ll: MutableList<Int>?)
{
    if (ll.hasEntries()) {
        ll.clear() // ← error here
    }
}