def cancel(id)
      have_key?
      address = @url_privat + "/api/exchange/orders/" + id
      body = { }
      h = delete_ssl_with_sign(address, body)
      {
        "success" => h["success"],
      }
    end
def cancel(id)
      have_key?
      address = @url_privat + "/api/exchange/orders/" + id
      body = { }
      h = delete_ssl_with_sign(address, body)
      {
        "success" => h["success"],
      }
    end
Cancel an open order
 @abstract
 @param [int or string] order id
 @return [hash]
   success: [bool] status