def basedir_def(*args):
    return os.path.join('$pybasedir', *args)
update the overlayWidget of the volumeEditor and switch the _history
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/paths.py/basedir_def--crossover with--dataset/ETHPy150Open ilastik/ilastik-0.5/ilastik/ilastikMain.py/MainWindow.tabChanged