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airbyte-cdk/python/airbyte_cdk/sources/declarative/partition_routers/substream_partition_router.py

@@ -138,6 +138,8 @@ def stream_slices(self) -> Iterable[StreamSlice]:
 
                     # we need to read all records for slice to update the parent stream cursor
                     stream_slices_for_parent = []
+
+                    # only stream_slice param is used in the declarative stream
                     for parent_record in parent_stream.read_records(
                         sync_mode=SyncMode.full_refresh, cursor_field=None, stream_slice=parent_stream_slice, stream_state=None
                     ):