get current partition id of Thread Network Partition from LeaderData

        Returns:
            The Thread network Partition Id

def getNetworkFragmentID(self):
        """get current partition id of Thread Network Partition from LeaderData

        Returns:
            The Thread network Partition Id
        """
        print '%s call getNetworkFragmentID' % self.port
        if not self.____isOpenThreadWpanRunning():
            print 'OpenThreadWpan is not running'
            return None

        return self.__sendCommand(WPANCTL_CMD + 'getprop -v Network:PartitionId')[0]