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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 hash_values(self, amount, receiver_address, sender_address, lock_condition_id, release_condition_id):
 """ Hash the values of the escrow reward condition. :param amount: Amount of tokens, int :param receiver_address: ethereum address of the receiver, hex str :param sender_address: ethereum address of the sender, hex str :param lock_condition_id: id of the condition, str :param release_condition_id: id of the condition, str :return: hex str """

        return self._hash_values(
            amount,
            receiver_address,
            sender_address,
            lock_condition_id,
            release_condition_id
        )