lupdate is confused by "class" within template angle brackets

// main.h

class Foo
{
    Q_OBJECT
    template<class T>
    void func();
}

// main.cpp

#include "main.h"

template<class T>
void Foo::func()
{
    tr("Message"); // Context is T instead of Foo
}

template<class T> class TempClass;

namespace Ns {
class SomeClass
{
    Q_OBJECT

    void func();
};

void SomeClass::func()
{
    tr("Message"); // error: Qualifying with unknown namespace/class ::SomeClass
}
} // namespace Ns