code: @Override
      public ChunkedActionRenderResult renderStart(ODataRequestContext requestContext, QueryResult result,
                                                   OutputStream outputStream) throws ODataException {
          // Do nothing for default implementation
          return new ChunkedActionRenderResult(outputStream);
      }
docs: Default implementation. Returns empty string, the real content goes when triggering renderBody.
  <p>
  {@inheritDoc}