docs: protected void configureFhirRequest(HttpRequest request, String format, List<Header> headers) {
      request.addHeader("User-Agent", "Java FHIR Client for FHIR");
  
      if (format != null) {		
        request.addHeader("Accept",format);
        request.addHeader("Content-Type", format + ";charset=" + DEFAULT_CHARSET);
      }
      request.addHeader("Accept-Charset", DEFAULT_CHARSET);
      if(headers != null) {
        for(Header header : headers) {
          request.addHeader(header);
        }
      }
      setAuth(request);
    }