private static String lookupApiKey ( Properties props ) { String apiKey = null ; // lookup from system property td.logger.api.key. If it exists, writes/updates td.api.key. if ( props . containsKey ( Config . TD_LOGGER_API_KEY ) ) { apiKey = props . getProperty ( Config . TD_LOGGER_API_KEY ) ; props . setProperty ( Config . TD_API_KEY , apiKey ) ; } return apiKey ; }
Define order for API key lookup . 1 . lookup props s td . logger . api . key