Lee-W commented on code in PR #60204:
URL: https://github.com/apache/airflow/pull/60204#discussion_r2693857035


##########
airflow-core/src/airflow/serialization/encoders.py:
##########
@@ -347,3 +364,41 @@ def ensure_serialized_asset(obj: BaseAsset | 
SerializedAssetBase) -> SerializedA
     from airflow.serialization.decoders import decode_asset_like
 
     return decode_asset_like(encode_asset_like(obj))
+
+
+class _PartitionMapperSerializer:
+    BUILTIN_PARTITION_MAPPERS: dict[type, str] = {
+        IdentityMapper: "airflow.timetables.simple.IdentityMapper",
+    }
+
+    @functools.singledispatchmethod
+    def serialize(self, partition_mapper: PartitionMapper) -> dict[str, Any]:
+        raise NotImplementedError
+
+    @serialize.register
+    def _(self, partition_mapper: IdentityMapper) -> dict[str, Any]:
+        return {}

Review Comment:
   I renamed it as `_Serializer` and split `serialize` into 
`serialize_timetable` and `serialize_partition_mapper`. I think it would be 
easier to maintain this way



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