Detect at compile time if a function is executed in a static context, C++20

Can I detect via templates, concepts or in any other constexpr way if a function is being run in a static context? Something like this:

template <typename T = SomeTypeIfImStatic_SomeOtherTypeIfImNot>
class FBlah
{
    void foo()
    {
        if constexpr (AmIStatic) { ... } else { ... }
    }
};

Alternatively, like this:

template <typename T = SomeTypeIfImStatic_SomeOtherTypeIfImNot>
class FBlah
{
};

Would like to differentiate between being run in a static FBlah Blah; or an FBlah Blah; inside of an FBlah itself.

I'm aware that I could declare two types, one for static FBlah the other for non-static but I'm looking for a compile-time way to do this. I'm using C++20.