private void on_download_updated(cef_download_handler_t *self, cef_browser_t *browser, cef_download_item_t *download_item, cef_download_item_callback_t *callback)
        {
            CheckSelf(self);

            var m_browser       = CefBrowser.FromNative(browser);
            var m_download_item = CefDownloadItem.FromNative(download_item);
            var m_callback      = CefDownloadItemCallback.FromNative(callback);

            OnDownloadUpdated(m_browser, m_download_item, m_callback);

            m_download_item.Dispose();
        }
        private void on_before_download(cef_download_handler_t *self, cef_browser_t *browser, cef_download_item_t *download_item, cef_string_t *suggested_name, cef_before_download_callback_t *callback)
        {
            CheckSelf(self);

            var m_browser        = CefBrowser.FromNative(browser);
            var m_download_item  = CefDownloadItem.FromNative(download_item);
            var m_suggested_name = cef_string_t.ToString(suggested_name);
            var m_callback       = CefBeforeDownloadCallback.FromNative(callback);

            OnBeforeDownload(m_browser, m_download_item, m_suggested_name, m_callback);

            m_download_item.Dispose();
        }