def append(self, elem):

        # Unwrap templates...
        elem = elem.unwrap()

        # Avoid duplications
        if elem.tag in self._childmap:
            raise KeyError(elem.tag)

        self._children.append(elem)
        self._childmap[elem.tag] = elem
Append a child to the element.
dataset/ETHPy150Open openstack/rack/rack/api/xmlutil.py/TemplateElement.append