def __init__(self):
     PostProcessingModule.__init__(self)
     self.label_positions = None
     return
 def __init__(self):
     PostProcessingModule.__init__(self)
     self.label_positions = None
     return
 def __init__(self):
     PostProcessingModule.__init__(self)
     return
 def __init__(self):
     PostProcessingModule.__init__(self)
     return