HttpRequestTaskSpecification(String url, {String method, bool withCredentials, String responseType, String mimeType, Map<String, String> requestHeaders, sendData, void onProgress(ProgressEvent e)})

Source

HttpRequestTaskSpecification(this.url,
    {String this.method, bool this.withCredentials, String this.responseType,
    String this.mimeType, Map<String, String> this.requestHeaders,
    this.sendData,
    void this.onProgress(ProgressEvent e)});