code: def RelaxNGSetSchema(self, reader):
          
          if reader is None: reader__o = None
          else: reader__o = reader._o
          ret = libxml2mod.xmlTextReaderRelaxNGSetSchema(reader__o, self._o)
          return ret
docs: Use RelaxNG to validate the document as it is processed.
            Activation is only possible before the first Read(). if
            @schema is None, then RelaxNG validation is desactivated. @
            The @schema should not be freed until the reader is
             deallocated or its use has been deactivated.