code: def qteAdjustWidgetSizes(self, handlePos: int=None):
          
          # Do not adjust anything if there are less than two widgets.
          if self.count() < 2:
              return
          
          if self.orientation() == QtCore.Qt.Horizontal:
              totDim = self.size().width() - self.handleWidth()
          else:
              totDim = self.size().height() - self.handleWidth()
  
          # Assign both widgets the same size if no handle position provided.
          if handlePos is None:
              handlePos = (totDim + self.handleWidth()) // 2
  
          # Sanity check.
          if not (0 <= handlePos <= totDim):
              return
  
          # Compute widget sizes according to handle position.
          newSize = [handlePos, totDim - handlePos]
  
          # Assign the widget sizes.
          self.setSizes(newSize)
docs: Adjust the widget size inside the splitter according to ``handlePos``.
  
          See ``pos`` argument in _qteSplitterMovedEvent for a more detailed
          explanation.
  
          If ``handlePos`` is **None**, then the widgets are assigne equal size.
  
          |Args|
  
          * ``handlePos`` (**int**): splitter position relative to the origin.
  
          |Returns|
  
          * **None**
  
          |Raises|
  
          * **QtmacsArgumentError** if at least one argument has an invalid type.