function getDefaultRange()

in Code.gs [123:131]


function getDefaultRange() {
  try {
    var sheet = SpreadsheetApp.getActiveSheet();
    var data_range = sheet.getRange(1, 1, sheet.getLastRow(), sheet.getLastColumn());
    return data_range.getA1Notation();
  } catch(e) {
    throw "There is no data in the sheet.";
  }
}