function fetchRouteDataimport { fetchRouteData } from "https://deno.land/x/aleph@1.0.0-beta.21/server/routing.ts"; fetchRouteData(req: Request,ctx: Context,router: Router,_data_: boolean,): Promise<Response | void>Parametersreq: Requestctx: Contextrouter: Router_data_: booleanReturnsPromise<Response | void>