@Override
  protected Response logAndRebufferResponse(
      String configKey, Level logLevel, Response response, long elapsedTime) throws IOException {
    if (logger.isDebugEnabled()) {
      return super.logAndRebufferResponse(configKey, logLevel, response, elapsedTime);
    }
    return response;
  }
Logs to SLF4J at the debug level, if the underlying logger has debug logging enabled. The
underlying logger can be specified at construction-time, defaulting to the logger for {@link
feign.Logger}.
slf4j/src/main/java/feign/slf4j/Slf4jLogger.java