This shouldn't be a problem I think. There's not a reason to cast to Set<Object> and then look for employees there. If a function wants to accept a set of let's

This shouldn't be a problem I think. There's not a reason to cast to Set<Object> and then look for employees there. If a function wants to accept a set of let's say emplpyees and ints, it would have a Set<Int|Employee> argument.