FileTransferManager should generate 'complete' event.
The org.jivesoftware.openfire.filetransfer.FileTransferManager implementation allows users to register an event listener. This listener is invoked when a file transfer starts.
It is useful to be able to determine that a file transfer has finished (either in a successful or non-successful state). Such an event should be added.
Event handling for the File Transfer package has been adjusted. It now facilitates the second event.
The old event handler FileTransferInterceptor was replaced by FileTransferEventListener.