def __init__(self, root, version, nsmap=None):

        super(MasterTemplate, self).__init__(root, nsmap)
        self.version = version
        self.slaves = []
Invoke this to flush data changes downstream.  This is
dataset/ETHPy150Open openstack/rack/rack/api/xmlutil.py/MasterTemplate.__init__--crossover with--dataset/ETHPy150Open enthought/mayavi/mayavi/sources/vtk_data_source.py/VTKDataSource.update