function writeTrailersimport { writeTrailers } from "https://deno.land/std@0.62.0/http/_io.ts"; writeTrailers(w: Deno.Writer,headers: Headers,trailers: Headers,): Promise<void>Write trailer headers to writer. It should mostly should be called after writeResponse(). Parametersw: Deno.Writerheaders: Headerstrailers: HeadersReturnsPromise<void>