It seems like the Pull Request you’re referring to is undefined and lacks specific details. To summarize a Pull Request effectively, I would typically need information such as the following:

1. Title/Description: What is the main purpose or goal of the PR?
2. Changes Made: What specific changes were made to the codebase?
3. Motivation: Why were these changes necessary? What problem are they solving?
4. Impact: How do these changes affect the existing codebase? Any breaking changes?
5. Testing: What testing has been done, or what types of tests are required?
6. Dependencies: Are there any external dependencies or related issues?

If you provide these details, I can create a concise and informative summary for an advanced developer.