code: def SchemaValidateCtxt(self, reader, options):
          
          if reader is None: reader__o = None
          else: reader__o = reader._o
          ret = libxml2mod.xmlTextReaderSchemaValidateCtxt(reader__o, self._o, options)
          return ret
docs: Use W3C XSD schema context to validate the document as it
            is processed. Activation is only possible before the first
            Read(). If @ctxt is None, then XML Schema validation is
             deactivated.