Major Description
The aftterCommand method in the Ftplet interface is a great way to listen for events from the FtpServer, however, this call back method does not tell anything about the result of the command execution.
Change the signature of this method to include the result of the command.
More information on this is available at http://www.mail-archive.com/ftpserver-users@mina.apache.org/msg00407.html.