code: def get_password_data(self, instance_id):
          
  
          params = {'InstanceId' : instance_id}
          rs = self.get_object('GetPasswordData', params, ResultSet, verb='POST')
          return rs.passwordData
docs: Get encrypted administrator password for a Windows instance.
  
          :type instance_id: string
          :param instance_id: The identifier of the instance to retrieve the
                              password for.