method Untar.prototype.extractimport { Untar } from "https://dotland.deno.dev/std@0.223.0/archive/untar.ts"; extract(): Promise<TarEntry | null>Extract the next entry of the tar archive. ReturnsPromise<TarEntry | null>A TarEntry with header metadata and a reader to the entry's body, or null if there are no more entries to extract.