* [[How to check a string null in Dart?|https://stackoverflow.com/questions/62212456/how-to-check-a-string-null-in-dart]] (with various properties)
** [[Dart null / false / empty checking: How to write this shorter?|https://stackoverflow.com/questions/42446566/dart-null-false-empty-checking-how-to-write-this-shorter#52948927]]
