wp-includes/rest-api/endpoints/class-wp-rest-sidebars-controller.php:185Retrieves one sidebar from the collection.
$requestWP_REST_RequestWP_REST_Response|WP_Error public function get_item( $request ) { $this->retrieve_widgets(); $sidebar = $this->get_sidebar( $request['id'] ); if ( ! $sidebar ) { return new WP_Error( 'rest_sidebar_not_found', __( 'No sidebar exists with that id.' ), array( 'status' => 404 ) ); } return $this->prepare_item_for_response( $sidebar, $request ); }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/rest-api/endpoints/class-wp-rest-sidebars-controller.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.