$ ./server-migration.sh --help
java.lang.ExceptionInInitializerError
	at org.jboss.migration.cli.CommandLineArgumentUsageImpl.init(CommandLineArgumentUsageImpl.java:30)
	at org.jboss.migration.cli.CommandLineArgumentUsageImpl.printUsage(CommandLineArgumentUsageImpl.java:43)
	at org.jboss.migration.cli.CommandLineServerMigration.usage(CommandLineServerMigration.java:48)
	at org.jboss.migration.cli.CommandLineServerMigration.main(CommandLineServerMigration.java:65)
Caused by: java.lang.IllegalArgumentException: Invalid logger interface org.jboss.migration.cli.logger.CommandLineMigrationLogger (implementation not found in sun.misc.Launcher$AppClassLoader@45ee12a7)
	at org.jboss.logging.Logger$1.run(Logger.java:2556)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.jboss.logging.Logger.getMessageLogger(Logger.java:2529)
	at org.jboss.logging.Logger.getMessageLogger(Logger.java:2516)
	at org.jboss.migration.cli.logger.CommandLineMigrationLogger.<clinit>(CommandLineMigrationLogger.java:29)
	... 4 more

$ ./server-migration.sh --help

Usage: server-migration.sh [args...]
where args include:
    --environment <value>               Path to the properties file containing 
                                        the user environment.


    --interactive <value>               Indicates if the migration tool should 
                                        interact (or not) with the user. Value 
                                        should either be true or false.


    --source <value>                    Path to the base dir of the server to 
                                        migrate from.


    --target <value>                    Path to the base dir of the server to 
                                        migrate to.