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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_order_history(self, market=None):
 """ Used to retrieve order trade history of account Endpoint: 1.1 /account/getorderhistory 2.0 /key/orders/getorderhistory or /key/market/GetOrderHistory :param market: optional a string literal for the market (ie. BTC-LTC). If omitted, will return for all markets :type market: str :return: order history in JSON :rtype : dict """

        if market:
            return self._api_query(path_dict={
                API_V1_1: '/account/getorderhistory',
                API_V2_0: '/key/market/GetOrderHistory'
            }, options={'market': market, 'marketname': market}, protection=PROTECTION_PRV)
        else:
            return self._api_query(path_dict={
                API_V1_1: '/account/getorderhistory',
                API_V2_0: '/key/orders/getorderhistory'
            }, protection=PROTECTION_PRV)