func checkForStickersJson(success: @escaping ((_ results:[String:Any]) -> () ), failure: @escaping ((_ error:Error?) -> ()  ))  {
        if let cachingManager = cachingManager, let chatEngine = chatEngine {
            if  cachingManager.isItemCached(atPath: chatEngine.webRouterConnectData.sticker_icon_url)  {
                if let stickerJSON = cachingManager.jsonCached(atPath: chatEngine.webRouterConnectData.sticker_icon_url) as? [String: Any] {
                    if let json = PTSessionManager.sharedInstance().jsonVersions as? [String: Any], let version:String = json["stickers_version"] as? String, let jsonVersion = stickerJSON["version"] as? String  {
                        if jsonVersion == version {
                            DispatchQueue.main.async {
                                success(stickerJSON)
                                return
                            }
                        } else {
                            downloadStickerJson(success: { (json) in
                                DispatchQueue.main.async {
                                    success(json)
                                    return
                                }
                            }, failure: { (error) in
                                DispatchQueue.main.async {
                                    failure(error)
                                    return
                                }
                            })
                        }
                    } else {
                        downloadStickerJson(success: { (json) in
                            DispatchQueue.main.async {
                                success(json)
                                return
                            }
                        }, failure: { (error) in
                            DispatchQueue.main.async {
                                failure(error)
                                return
                            }
                        })
                    }
                } else {
                    downloadStickerJson(success: { (json) in
                        DispatchQueue.main.async {
                            success(json)
                            return
                        }
                    }, failure: { (error) in
                        DispatchQueue.main.async {
                            failure(error)
                            return
                        }
                    })
                }
            } else {
                downloadStickerJson(success: { (json) in
                    DispatchQueue.main.async {
                        success(json)
                        return
                    }
                }, failure: { (error) in
                    DispatchQueue.main.async {
                        failure(error)
                        return
                    }
                })
            }
        }
    }