_DIMENSIONS = { //These values should be slightly smaller than the size set in ExportSheetData.openPicker()
        width: 650,
        height: 450
    };
    /**
     * Status values for select file operations using the file picker.
     * @enum {number}
     **/
    const SelectFileStatus = {
      Inactive: 0,
      Active: 1,
      Completed: 2,
      Cancelled: 3,
      Timeout: 4,
      Error: 5
    };
    
    let pickerApiLoaded = false;
    let oauthToken = "";
    let secretKeys = {};

    functio