text: class Driver(object):
      @classmethod
      def softwareReset(cls):
          pass
  
      def __init__(self, address=0x40, busnum=-1, logger=None):
          pass
  
      def wakeUp(self):
          pass
  
      def sleep(self):
          pass
  
      def setPWMFreq(self, freq):
          pass
  
      def setPWM(self, channel, on, off):
          pass
  
      def setAllPWM(self, on, off):
          pass
  