Add @Superset and @Subset annotations

[jossmoff]

Search before asking

• I had searched in the issues and found no similar issues.

Description

It's a common check to validate that we have some a collection that is either a subset or superset of some other collection.

Solution

We can use Set.containsAll(Collection <?> C) (docs) to do this check. We will convert the collection to a list for superset by using the following:

list.stream().collect(Collectors.toSet());

Are you willing to submit PR?

• Yes I am willing to submit a PR!