public: class QString __thiscall QString::arg(class QStringView, int, class QChar)const

Mangled name

?arg@QString@@QBE?AV1@VQStringView@@HVQChar@@@Z

Exported by

size	filename	version
5327960	Qt5Core.dll	5.13.2.0
4874240	Qt5Core.dll	5.11.2.0