Handler called when an App wants to modify a room in a destructive way.
Checks whether the handler actually shall execute. This method can basically implement a filter.
The room which was being created
An accessor to the environment
An accessor to the outside world
whether to run the execute or not
Method which is to be used to prevent a room from being created.
The room about to be created
An accessor to the App's persistence storage
the resulting room
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Handler called when an App wants to modify a room in a destructive way.