code: def deepcopy(self, x1=None, y1=None, x2=None, y2=None, label=None):
          
          return self.copy(x1=x1, y1=y1, x2=x2, y2=y2, label=label)
docs: Create a deep copy of the BoundingBox object.
  
          Parameters
          ----------
          x1 : None or number
              If not None, then the x1 coordinate of the copied object will be set to this value.
  
          y1 : None or number
              If not None, then the y1 coordinate of the copied object will be set to this value.
  
          x2 : None or number
              If not None, then the x2 coordinate of the copied object will be set to this value.
  
          y2 : None or number
              If not None, then the y2 coordinate of the copied object will be set to this value.
  
          label : None or string
              If not None, then the label of the copied object will be set to this value.
  
          Returns
          -------
          imgaug.BoundingBox
              Deep copy.