WP_REST_Server::get_namespace_index( WP_REST_Request $request ): WP_REST_Response|WP_Error

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public function get_namespace_index( $request ) {	$namespace = $request['namespace'];	if ( ! isset( $this->namespaces[ $namespace ] ) ) {	return new WP_Error(	'rest_invalid_namespace',	__( 'The specified namespace could not be found.' ),	array( 'status' => 404 )	);	}	$routes = $this->namespaces[ $namespace ];	$endpoints = array_intersect_key( $this->get_routes(), $routes );	$data = array(	'namespace' => $namespace,	'routes' => $this->get_data_for_routes( $endpoints, $request['context'] ),	);	$response = rest_ensure_response( $data );	// Link to the root index.	$response->add_link( 'up', rest_url( '/' ) );	/** * Filters the REST API namespace index data. * * This typically is just the route data for the namespace, but you can * add any data you'd like here. * * @since 4.4.0 * * @param WP_REST_Response $response Response data. * @param WP_REST_Request $request Request data. The namespace is passed as the 'namespace' parameter. */	return apply_filters( 'rest_namespace_index', $response, $request ); } 

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