def METHOD_NAME(self, conf: ConfigTree) -> None:
    conf = conf.with_fallback(AthenaMetadataExtractor.DEFAULT_CONFIG)
    self._cluster = conf.get_string(AthenaMetadataExtractor.CATALOG_KEY)
    self.sql_stmt = AthenaMetadataExtractor.SQL_STATEMENT.format(
        where_clause_suffix=conf.get_string(AthenaMetadataExtractor.WHERE_CLAUSE_SUFFIX_KEY),
        catalog_source=self._cluster
    )
    LOGGER.info('SQL for Athena metadata: %s', self.sql_stmt)
    self._alchemy_extractor = sql_alchemy_extractor.from_surrounding_config(conf, self.sql_stmt)
    self._extract_iter: Union[None, Iterator] = None