Add a findFirstOfType method?

[sleberknight]

I found the following method copied (ugh) in several of our services. Is this something that we should move into kiwi?

public static <T, U> Optional<T> findFirstOfType(Class<T> theType, List<U> objects) {
    checkArgumentNotNull(theType);
    checkArgumentNotNull(objects);
    return objects.stream()
        .filter(Objects::nonNull)
        .filter(o -> theType.isAssignableFrom(o.getClass()))
        .map(o -> (T) o)
        .findFirst();
}

Considerations:

• Should objects be a List or a more generic type such as Collection (even though collections don't imply a natural ordering)?
• Is this too specific or is there already something like this in the JDK, Guava, StreamEx, etc?
• Where would it "live"? If we keep it on lists, then it could go in KiwiLists as a possible home.

[sleberknight]

In JDK 21, it would make sense to do this for SequencedCollection, but that doesn't exist in JDK 17.

[sleberknight]

Given that this only makes sense when T is a subtype of U, might want to change the T type parameter to T extends U

[sleberknight]

Since this was only used in a few services (copied), I am adding this to kiwi-beta for now., and closing this here as "Fixed".

PR: sleberknight/kiwi-beta#389