def load_fees(self, reload=False):
    if (not reload):
        if (self.loaded_fees != Exchange.loaded_fees):
            return self.loaded_fees
    self.loaded_fees = self.deep_extend(self.loaded_fees, self.fetch_fees())
    return self.loaded_fees
def load_fees(self, reload=False):
    if (not reload):
        if (self.loaded_fees != Exchange.loaded_fees):
            return self.loaded_fees
    self.loaded_fees = self.deep_extend(self.loaded_fees, self.fetch_fees())
    return self.loaded_fees