Convert Raw Types to Generics in private methods

Considering the following

private Set<Integer> elements = Set.of(1,2,3);

private boolean containsNumber(int number, Set elements) {
      return elements.contains(number); 
    }

In this case, containsNumber is private and only a set of Integers is passed. It would be better to do this instead :

private Set<Integer> elements = Set.of(1,2,3);

private boolean containsNumber(int number, Set<Integer> elements) {
      return elements.contains(number); 
    }

Similar spec : https://rules.sonarsource.com/java/RSPEC-3740

Start by locating the Java recipe or analysis entry point for raw types and compare its behavior with Sonar rule RSPEC-3740. Verify how private methods are handled and add coverage for a raw Set parameter that can be parameterized; done means the issue is detected and the suggested or applied change uses the concrete generic type.