def bytes_schema(self, schema: CoreSchema) -> JsonSchemaValue:
        json_schema = {"type": "string", "contentMediaType": "application/octet-stream"}
        bytes_mode = (
            self._config.ser_json_bytes
            if self.mode == "serialization"
            else self._config.val_json_bytes
        )
        if bytes_mode == "base64":
            json_schema["contentEncoding"] = "base64"