IamUtil.renameUserCallback()
DESCRIPTION
Update an IAM user’s username on device. Runs asynchronously with a callback.
Result and error information is sent to the callback.
DECLARATION
public abstract void renameUserCallback(Connection connection, String username, String newUsername, IamCallback callback)
PARAMETERS
connection:- An established connection to the device
 username:- Username for the user that should have username updated
 newUsername:- New username for the user
 callback:- The callback that will be run once the function has completed successfully or erroneously.