Search the DTD for the description of this element

def dtdQElementDesc(self, name, prefix):
        """Search the DTD for the description of this element """
        ret = libxml2mod.xmlGetDtdQElementDesc(self._o, name, prefix)
        if ret is None:raise treeError('xmlGetDtdQElementDesc() failed')
        __tmp = xmlElement(_obj=ret)
        return __tmp