wp-includes/class-wp-customize-manager.php:1716Saves starter content changeset.
public function _save_starter_content_changeset() { if ( empty( $this->pending_starter_content_settings_ids ) ) { return; } $this->save_changeset_post( array( 'data' => array_fill_keys( $this->pending_starter_content_settings_ids, array( 'starter_content' => true ) ), 'starter_content' => true, ) ); $this->saved_starter_content_changeset = true; $this->pending_starter_content_settings_ids = array(); }Introduced in 4.7.0. 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-manager.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.