When building a simulator for QFace with a single value struct then it can end up having a compile errror

Building a structure containing a single value is possible and works in normal cases:

struct TestStruct {
   string myString;
}
interface MainService {
   TestStruct thatStruct;
}

When simulating, a default value for this struct has to be specified:

com.test.main.MainService#thatStruct:
config_simulator:
default: ["Hello Qt"]

This results in generated code mainservicebackend.cpp for the simulator with the snippet:

, m_thatStruct(TestStruct({QLatin1String("Hello Qt")}))

unfortunately, this gets a compiler error: it's an ambiguous constructor call for the TestStruct type. It could be a copy constructor, a QVariant constructor, or a QString constructor.