docs: public void addHeaders(Map<String, List<String>> headers) {
  
          if (m_completed) {
              return;
          }
          m_headers = headers;
  
          Iterator<String> allHeaders = m_headers.keySet().iterator();
          while (allHeaders.hasNext()) {
              m_byteSize += CmsMemoryMonitor.getMemorySize(allHeaders.next());
          }
      }