JIRA: https://jira.spring.io/browse/INT-3827 Provide a hook to enable removing a file from an `AcceptOnceFileListFilter`, for example after a message processing failure. Make the `CompositeFileListFilter` a `ReversibleFileListFilter` so it can delegate to any of its composed filters that are reversible. INT-3827: Polishing - PR Comments
don't delete this dir used for testing