method VisitorDelegate.prototype.getFlagValueimport { VisitorDelegate } from "https://deno.land/x/flagship_io_js_sdk@4.0.2/visitor/VisitorDelegate.ts"; getFlagValue<T>(param: GetFlagValueParam<T>): T extends null ? unknown : TType ParametersTParametersparam: GetFlagValueParam<T>ReturnsT extends null ? unknown : T