setTitle method
API to set spinner title.
Parameters:
title Spinner title for SpinnerControl.
Exceptions:
Throws an ArgumentError if spinnerTitle is empty.
Implementation
void setTitle(String title) {
if (title.isEmpty) {
throw ArgumentError("setTitle : You must set spinner title");
}
SheetItem sheetItem = SheetItem(id: "", title: title, sheetItemType: items?.elementAt(0).getSheetItemType());
items?.insert(0, sheetItem);
}