def UpdateProgress(self, item):
    raise NotImplementedError()
TODO: allowing changing of the master ip, say on a master only rebuild.
dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/appengine/tools/bulkloader.py/_ProgressThreadBase.UpdateProgress--crossover with--dataset/ETHPy150Open rizumu/bootmachine/bootmachine/contrib/configurators/salt.py/change_master_ip