It appears that the pull request you’ve referenced is currently undefined or lacks specific details. To create a summary for an advanced developer, I would typically need information such as:

1. Title and Description: What features, fixes, or improvements does the pull request intend to implement?
2. Changes Made: What files or modules were altered, and what are the key changes?
3. Impact: How do these changes affect existing functionality or performance?
4. Testing: Were there any tests added, updated, or removed? What are the results?
5. Review Comments: Are there any notable discussions or feedback from other contributors?

With that said, if you could provide more specific information about the pull request, I would be happy to help you formulate an advanced developer summary!