/**
   * Delete any tmp storage for parts, and clear out the parts list.
   *
   * @throws MultiException
   */
  public void deleteParts() throws MultiException {
    Collection<Part> parts = getParsedParts();
    MultiException err = new MultiException();
    for (Part p : parts) {
      try {
        ((MultiPartInputStreamParser.MultiPart) p).cleanUp();
      } catch (Exception e) {
        err.add(e);
      }
    }
    _parts.clear();

    err.ifExceptionThrowMulti();
  }