method VisitorStrategyAbstract.prototype.getFlagValueimport { VisitorStrategyAbstract } from "https://deno.land/x/flagship_io_js_sdk@4.0.2/visitor/VisitorStrategyAbstract.ts"; getFlagValue<T>(param: { key: string; defaultValue: T; flag?: FlagDTO; userExposed?: boolean; }): TType ParametersTParametersparam: { key: string; defaultValue: T; flag?: FlagDTO; userExposed?: boolean; }ReturnsT