def __add__(self, path):
        if path:
            return self.__class__(self.moniker + sep + path)
        else:
            #
            # path is unlikely to be empty for a specific call,
            # but this functionality is used by the create and
            # delete methods which refer to the existing class
            # by default.
            #
            return self
Allow a key to be added to an existing moniker.
dataset/ETHPy150Open tjguk/winsys/winsys/registry.py/Registry.__add__