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https://issues.apache.org/jira/browse/WICKET-6396?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16133966#comment-16133966
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Sven Meier commented on WICKET-6396:
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[~solomax] returning IModel<Boolean> makes it more useful, as you can pass the
model to other components.
As argued above, this holds for all methods that return a model divergent from
their counterparts in Optional.
> 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
> Assignee: Sven Meier
> Priority: Minor
> Fix For: 8.0.0-M8
>
>
> 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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