code: def relaxNGParse(self):
          
          ret = libxml2mod.xmlRelaxNGParse(self._o)
          if ret is None:raise parserError('xmlRelaxNGParse() failed')
          __tmp = relaxNgSchema(_obj=ret)
          return __tmp
docs: parse a schema definition resource and build an internal
             XML Shema struture which can be used to validate instances.