THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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No change in user code is required, but the authenticate method can now be made protected to avoid confusion with the signIn method.
AbstractResource.ResourceResponse API became more fluent. WICKET-5330
All setter methods in AbstractResource.ResourceResponse class now will return this instance for method chaining.
Behavior changes
org.apache.wicket.request.Url#getQueryString WICKET-4664
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