findOverridee might throw exception

[yigit]

For the following code:

class Foo {
    fun instanceMethod(): String =TODO()
    companion object {
        fun companionMethod(): String =TODO()
    }
}

calling findOverridee on an instance of companionMethod / instanceMethod throws java.util.NoSuchElementException: Collection contains no element matching the predicate..
Since the method is nullable, i think it is better to return null instead of throwing?