def __init__(self, nopts=None, **opts):
        self.nopts = {} if nopts is None else nopts
        BaseTopo.__init__(self, **opts)

    # Override addHost so that constructor defaults to MiniNExT host
Return a string containing a namespace declaration for each of *nspfxs*,
dataset/ETHPy150Open USC-NSL/miniNExT/mininext/topo.py/Topo.__init__--crossover with--dataset/ETHPy150Open scanny/python-pptx/tests/unitutil/cxml.py/nsdecls