[{'Text': 'Edited point-topic-mcp/src/point_topic_mcp/tools/gbs_query_tools.py:\n\n```diff\n@@ -76,7 +76,7 @@\n                     used |= _find_used_collections(facet_pipeline)\n         return used\n \n-    def read_gbs(pipeline_json: str = "", pipeline: list = None) -> str:\n+    def read_gbs(pipeline_json: str = "", pipeline: list | None = None) -> str:\n         """Run a read-only MongoDB aggregation pipeline against GBS collections.\n \n         Primary collections (pipeline runs against these):\n\n```'}]