code: def load_commodities(self):
          
          if isinstance(self.amount, Amount):
              self.amount = Amount("{0:.8f} {1}".format(self.amount.to_double(), self.currency))
          else:
              self.amount = Amount("{0:.8f} {1}".format(self.amount, self.currency))
docs: Load the commodities for Amounts in this object.