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https://issues.apache.org/jira/browse/WICKET-6396?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16048938#comment-16048938
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Kamil commented on WICKET-6396:
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Lambda helpers were methods that abused Wicket's way of creating components and
I agree that they should be removed.
But these "Optional" methods are different. Of course we don't need Optionals
in Java - we could use null checks all over the place, but there is a reason
why they were created... You are moving with Wicket to Java8 world and I think
you should move forward here too. Of course theese methods not necessary (just
like Optionals in Java), but they're very convenient.
> Model should provide other Optional's methods
> ---------------------------------------------
>
> Key: WICKET-6396
> URL: https://issues.apache.org/jira/browse/WICKET-6396
> Project: Wicket
> Issue Type: Improvement
> Affects Versions: 8.0.0-M6
> Reporter: Kamil
> Priority: Minor
>
> Model should provide
> {code}
> public <X extends Throwable> T orElseThrow(Supplier<? extends X>
> exceptionSupplier) throws X;
> {code}
> {code}
> public boolean isPresent();
> {code}
> {code}
> public void ifPresent(Consumer<? super T> consumer);
> {code}
> methods for the sake of consistency with Optional API
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