final Map<String, NcmpServiceCmHandle> firstQuery,
final Map<String, NcmpServiceCmHandle> secondQuery) {
if (firstQuery == NO_QUERY_TO_EXECUTE && secondQuery == NO_QUERY_TO_EXECUTE) {
- return Collections.emptyMap();
+ return NO_QUERY_TO_EXECUTE;
} else if (firstQuery == NO_QUERY_TO_EXECUTE) {
return secondQuery;
} else if (secondQuery == NO_QUERY_TO_EXECUTE) {