method TpyKV.prototype.getimport { TpyKV } from "https://deno.land/x/tpy@v1.0.0-RC/mod.ts"; get<T extends Json = Json>(key: string): Promise<T | undefined>Gets a key's value - returning the value or undefined. Type ParametersoptionalT extends Json = JsonThe return type of the function to a given Json type. Parameterskey: stringThe key to get. ReturnsPromise<T | undefined>