wp-includes/class-wp-theme.php:2064Clears block pattern cache.
public function delete_pattern_cache() { delete_site_transient( 'wp_theme_files_patterns-' . $this->cache_hash ); }Introduced in 6.4.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-theme.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.