intersection method
Returns a new set which is the intersection between this
and other
.
That is, the returned set contains all the elements of this Set that are
also elements of other
according to other.contains
.
Note that the returned set will use the default equality operation, which
may be different than the equality operation this
uses.
Implementation
@override
Set<E> intersection(Set<Object?> other) => where(other.contains).toSet();