docs: protected boolean hasMessageBody(ClientHttpResponse response) throws IOException {
  		HttpStatus responseStatus = response.getStatusCode();
  		if (responseStatus == HttpStatus.NO_CONTENT ||
  				responseStatus == HttpStatus.NOT_MODIFIED) {
  			return false;
  		}
  		long contentLength = response.getHeaders().getContentLength();
  		return contentLength != 0;
  	}