code: @Override
      public void destroy() {
          // Release all data items, including those not yet pulled
          cleanFiles();
  
          destroyed = true;
  
          if (undecodedChunk != null && undecodedChunk.refCnt() > 0) {
              undecodedChunk.release();
              undecodedChunk = null;
          }
      }
docs: Destroy the {@link HttpPostStandardRequestDecoder} and release all it resources. After this method
  was called it is not possible to operate on it anymore.