code: def shiftAccent(self, shiftAmount):
          '''
          Move the whole accent earlier or later
          '''
          if shiftAmount == 0:
              return
          
          self.pointList = [(time + shiftAmount, pitch)
                            for time, pitch in self.pointList]
          
          # Update shift amounts
          if shiftAmount < 0:
              self.netLeftShift += shiftAmount
          elif shiftAmount >= 0:
              self.netRightShift += shiftAmounf shiftAccent(self, shiftAmount):
          '''
          Move the whole accent earlier or later
          '''
          if shiftAmount == 0:
              return
          
          self.pointList = [(time + shiftAmount, pitch)
                            for time, pitch in self.pointList]
          
          # Update shift amounts
          if shiftAmount < 0:
              self.netLeftShift += shiftAmount
          elif shiftAmount >= 0:
              self.netRightShift += shiftAmount
docs: Move the whole accent earlier or later