Cloning of request arguments
It should be possible to have two instances of the same entity in a controller action by specifying a "@clone" annotation for a parameter. This is needed if an original object and an updated object need to be passed to the view.
We have / will get identity problems with that of course, but we should find a solution for that.
One use case would be the update of an address with advanced address validation / correction. The user should be able to see a corrected version and a original version of the address if there are any corrections.
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