wp-includes/class-wp-theme-json-resolver.php:735Cleans the cached data so it can be recalculated.
public static function clean_cached_data() { static::$core = null; static::$blocks = null; static::$blocks_cache = array( 'core' => array(), 'blocks' => array(), 'theme' => array(), 'user' => array(), ); static::$theme = null; static::$user = null; static::$user_custom_post_type_id = null; static::$i18n_schema = null; }Introduced in 5.8.0. 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-json-resolver.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.