Get the root element of the document (doc->children is a
           list containing possibly comments, PIs, etc ...).

def getRootElement(self):
        """Get the root element of the document (doc->children is a
           list containing possibly comments, PIs, etc ...). """
        ret = libxml2mod.xmlDocGetRootElement(self._o)
        if ret is None:raise treeError('xmlDocGetRootElement() failed')
        __tmp = xmlNode(_obj=ret)
        return __tmp