docs: def load_commodities(self):
          """
          Load the commodities for Amounts in this object.
          """
          base, quote = self.market.split("_")
          if isinstance(self.price, Amount):
              self.price = Amount("{0:.8f} {1}".format(self.price.to_double(), quote))
          else:
              self.price = Amount("{0:.8f} {1}".format(self.price, quote))
          if isinstance(self.amount, Amount):
              self.amount = Amount("{0:.8f} {1}".format(self.amount.to_double(), base))
          else:
              self.amount = Amount("{0:.8f} {1}".format(self.amount, base))
          if isinstance(self.exec_amount, Amount):
              self.exec_amount = Amount("{0:.8f} {1}".format(self.exec_amount.to_double(), base))
          else:
              self.exec_amount = Amount("{0:.8f} {1}".format(self.exec_amount, base))