'Make the schema\'s target namespace.
@return: The namespace representation of the schema\'s
targetNamespace value.
@rtype: (prefix, uri)'

def mktns(self):

    tns = [None, self.root.get('targetNamespace')]
    if (tns[1] is not None):
        tns[0] = self.root.findPrefix(tns[1])
    return tuple(tns)
