def refresh(self):
try:<EOL><INDENT>self._private_to_public = self.cloud_discovery.discover_nodes()<EOL><DEDENT>except Exception as ex:<EOL><INDENT>self.logger.warning("<STR_LIT>".format(ex.args[<NUM_LIT:0>]),<EOL>extra=self._logger_extras)<EOL><DEDENT>
Refreshes the internal lookup table if necessary.