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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 convert_bytes_to_identifiers(self, encrypted, subject_context):
 """ If a cipher_service is available, it will be used to first decrypt the serialized message. Then, the bytes are deserialized and returned. :param serialized: the bytes to decrypt and then deserialize :param subject_context: the contextual data, that is being used to construct a Subject instance :returns: the de-serialized identifier """


        # unlike Shiro, Yosai assumes that the message is encrypted:
        decrypted = self.decrypt(encrypted)

        return self.serialization_manager.deserialize(decrypted)