code: func (b *Bittrex) GetOpenOrders(market string) (openOrders []Order, err error) {
  	resource := "market/getopenorders"
  	if market != "all" {
  		resource += "?market=" + strings.ToUpper(market)
  	}
  	r, err := b.client.do("GET", resource, "", true)
  	if err != nil {
  		return
  	}
  	var response jsonResponse
  	if err = json.Unmarshal(r, &response); err != nil {
  		return
  	}
  	if err = json.Unmarshal(r, &response); err != nil {
  		return
  	}
  	err = json.Unmarshal(response.Result, &openOrders)
  	return
  }
docs: // GetOpenOrders returns orders that you currently have opened.
  // If market is set to "all", GetOpenOrders return all orders
  // If market is set to a specific order, GetOpenOrders return orders for this market