I need assistance with swapping out some custom code in my WordPress site's core files. The existing code is not functioning correctly, and I have received updated code from a third party that needs to be implemented. Ideal Skills and Experience: - Proficiency in WordPress core file structure and custom code integration - Experience with troubleshooting and fixing code issues - Familiarity with PHP and WordPress coding standards - Ability to work quickly and accurately - Attention to detail to ensure no other functionality is disrupted Please provide examples of similar work done and your approach to ensure a smooth and error-free code swap.