code: func (w *Writer) Base64Bytes(data []byte) {
  	if data == nil {
  		w.Buffer.AppendString("null")
  		return
  	}
  	w.Buffer.AppendByte('"')
  	w.base64(data)
  	w.Buffer.AppendByte('"')
  }
docs: // Base64Bytes appends data to the buffer after base64 encoding it