method FileStorage.prototype.getimport { FileStorage } from "https://deno.land/x/esm@v128/server.ts"; get(key: string): Promise<{ body: ReadableStream<Uint8Array>; httpMetadata?: HttpMetadata; } | null>Parameterskey: stringReturnsPromise<{ body: ReadableStream<Uint8Array>; httpMetadata?: HttpMetadata; } | null>