Creates an empty identity Set.
The created Set is a LinkedHashSet that uses identity as equality relation.
The set is equivalent to one created by new LinkedHashSet<E>.identity()
.
factory Set.identity() = LinkedHashSet<E>.identity;
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-core/Set/Set.identity.html