function getEntityimport { getEntity } from "https://dotland.deno.dev/x/oak@v17.1.3/middleware/etag.ts"; getEntity<S extends State = Record<string, any>>(context: Context<S>): Promise< | string | Uint8Array | Deno.FileInfo | undefined>For a given Context, try to determine the response body entity that an ETag can be calculated from. Type ParametersoptionalS extends State = Record<string, any>Parameterscontext: Context<S>ReturnsPromise< | string | Uint8Array | Deno.FileInfo | undefined>