code: def startCollapsedCommissioner(self):
          
          print '%s call startCollapsedCommissioner' % self.port
          if self.__startOpenThread():
              time.sleep(20)
              cmd = 'commissioner start'
              print cmd
              if self.__sendCommand(cmd)[0] == 'Done':
                  self.isActiveCommissioner = True
                  time.sleep(20) # time for petition process
                  return True
          return False
docs: start Collapsed Commissioner
  
          Returns:
              True: successful to start Commissioner
              False: fail to start Commissioner