return methodSet;
return new HashSet<Method>(methodSet);
    Set<Method> getMethodSet(String memberName) {        Set<Method> methodSet = fullNameToMethods.get(memberName);        if (methodSet == null) {            methodSet = nameToMethods.get(memberName);        }        if (methodSet == null) {            methodSet = new HashSet<Method>();        }        return methodSet;    }