code: def RelaxNGSetSchema(self, schema):
          
          if schema is None: schema__o = None
          else: schema__o = schema._o
          ret = libxml2mod.xmlTextReaderRelaxNGSetSchema(self._o, schema__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.