code: def getBumper(self):
          '''
          Returns last Bumper. 
  
          @return last JdeRobotTypes Bumper saved
  
          '''
          if self.hasproxy():
              self.lock.acquire()
              bumper = self.bumper
              self.lock.release()
              return bumper
  
          return Nonf getBumper(self):
          '''
          Returns last Bumper. 
  
          @return last JdeRobotTypes Bumper saved
  
          '''
          if self.hasproxy():
              self.lock.acquire()
              bumper = self.bumper
              self.lock.release()
              return bumper
  
          return None
docs: Returns last Bumper. 
  
          @return last JdeRobotTypes Bumper saved