_prime_site_caches()
Function: Adds any sites from the given IDs to the cache that do not already exist in cache.
Source: wp-includes/ms-site.php:351
get_pages()
Function: Retrieves an array of pages (or hierarchical post type items).
Source: wp-includes/post.php:5753
_prime_term_caches()
Function: Adds any terms from the given IDs to the cache that do not already exist in cache.
Source: wp-includes/taxonomy.php:4078
WP_Upgrader::init()
Method: Initialize the upgrader.
Source: wp-admin/includes/class-wp-upgrader.php:162