code: func NewWriteCloseInformer(wc io.WriteCloser) (io.WriteCloser, <-chan struct{}) {
  	close := make(chan struct{})
  	return &writeCloseInformer{
  		close: close,
  		wc:    wc,
  	}, close
  }
docs: // NewWriteCloseInformer creates the writeCloseInformer from a write closer.