code: private void setupAcceptEncoding(Map<String, String> requestHeaders) {
          // validates whether to add headers for accept-encoding for compression
          String acceptCompressionFormat = Config.getProperty(Config.COMPRESSION_RESPONSE_FORMAT);
          if (StringUtils.hasText(acceptCompressionFormat)) {
              requestHeaders.put(RequestElements.HEADER_PARAM_ACCEPT_ENCODING, acceptCompressionFormat);
          }
      }
docs: Setup accept encoding header from configuration
  @param requestHeaders