all method
A request handler
for this route that matches all HTTP methods.
Implementation
Future<void> all(HttpHandler handler) async {
final composedHandler = composeMiddleware(
[...api.opts.middlewares, ..._middlewares, handler],
HttpContext.fromCtx);
var worker = ApiWorker(this, composedHandler, HttpMethod.values,
security: security, client: _apiClient);
await worker.start();
}