Throws if argument is null.
@Since("2.1")
static void checkNotNull(Object argument, [String name]) {
if (argument == null) throw ArgumentError.notNull(name);
}
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.5.0/dart-core/ArgumentError/checkNotNull.html