implementationRegistration_xImplementationRegistration.registerImplementation(args[3], args[2], null);
}
else {
System.err.println("------ revoke " + args[2] + " of " + args[0]);
implementationRegistration_xImplementationRegistration.revokeImplementation(args[2], null);
}
}
else {
System.err.println("usage: <applicat> ");
System.err.println("\tregister <url> <loader>");