2451 const Value& Value::nullRef = null;  member in Json::Value
3342   ObjectValues::value_type defaultValue(key, nullRef);  in operator []()
3359     return nullRef;  in operator []()
3363     return nullRef;  in operator []()
3397   ObjectValues::value_type defaultValue(actualKey, nullRef);  in resolveReference()
3417   ObjectValues::value_type defaultValue(actualKey, nullRef);  in resolveReference()
3425   return value == &nullRef ? defaultValue : *value;  in get()
3444   if (!found) return nullRef;  in operator []()
3450   if (!found) return nullRef;  in operator []()
3473   if (!found) return nullRef;  in operator []()
3521     return nullRef;  in removeMember()
3908       if (node == &Value::nullRef) {  in resolve()
3929       if (node == &Value::nullRef)  in resolve()