WP_REST_Response::get_matched_handler()
Method: Retrieves the handler that was used to generate the response.
Source: wp-includes/rest-api/class-wp-rest-response.php:192
WP_REST_Response::set_matched_handler()
Method: Sets the handler that was responsible for generating the response.
Source: wp-includes/rest-api/class-wp-rest-response.php:203
WP_REST_Response::is_error()
Method: Checks if the response is an error, i.e. >= 400 response code.
Source: wp-includes/rest-api/class-wp-rest-response.php:214
WP_REST_Response::as_error()
Method: Retrieves a WP_Error object from the response.
Source: wp-includes/rest-api/class-wp-rest-response.php:225