BackendlessAPI.Engine.HeadersManager.AddHeader C# (CSharp) Méthode

        public void AddHeader(HeadersEnum headersEnum, string value)
        {
            lock (headersLock)
            {
              headers.Remove( headersEnum.Header );
              headers.Add(headersEnum.Header, value);
            }
        }

        public static HeadersManager GetInstance()
        {
            if (_instance == null)
            {
                lock (headersLock)
                {
                    if (_instance == null)
                    {
                        _instance = new HeadersManager();
                        _instance.AddHeader(HeadersEnum.APP_ID_NAME, Backendless.AppId);
                        _instance.AddHeader(HeadersEnum.SECRET_KEY_NAME, Backendless.SecretKey);
                        _instance.AddHeader(HeadersEnum.APP_TYPE_NAME, "REST");
                    }
                }
            }

            return(_instance);
        }