wp-includes/class-wp-customize-widgets.php:2128Begins keeping track of changes to widget options, caching new values.
protected function start_capturing_option_updates() { if ( $this->_is_capturing_option_updates ) { return; } $this->_is_capturing_option_updates = true; add_filter( 'pre_update_option', array( $this, 'capture_filter_pre_update_option' ), 10, 3 ); }Introduced in 3.9.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-customize-widgets.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.