apache/lucene

AI Summary: The `releaseWizard.py` script is generating multiple `DeprecationWarning` messages because it uses `datetime.datetime.utcnow()`, which is scheduled for removal. These warnings are cluttering the output and making it harder to read. The proposed fix is to replace all occurrences of `datetime.utcnow()` with `datetime.now(datetime.UTC)` to align with modern Python datetime practices.

AI Summary: Deprecate the `segString` method in Lucene's `MergePolicy.MergeSpecification` class. This involves reviewing its usage (reportedly only one instance), modifying that usage to utilize the `toString()` method instead, and updating the documentation to reflect the deprecation. The task requires familiarity with Java and the Lucene codebase.