function io.copyNimport { io } from "https://deno.land/x/s3si@ci/deps.ts"; const { copyN } = io; copyN(r: Reader,dest: Writer,size: number,): Promise<number>Copy N size at the most. If read size is lesser than N, then returns nread Parametersr: ReaderReader dest: WriterWriter size: numberRead size ReturnsPromise<number>