HashSet<Member> parentSet = new HashSet<Member>(methodToParentMap.get(methodName));
Set<Member> parentSet = methodToParentMap.get(methodName);
    Set<Member> getParentSet(String methodName) {        if (!methodToParentMap.containsKey(methodName)) {            methodToParentMap.put(methodName, new HashSet<Member>());        }        HashSet<Member> parentSet = new HashSet<Member>(methodToParentMap.get(methodName));        return parentSet;    }