Is there a straightforward way to determine if an object of a specific class has already been instantiated? I'm looking for some kind of LV primitive or function that would take the name of a class (or a constant class reference) and output a true/false whether an object of that class exists. Alternatively, I suppose it could even return a reference to that object, or maybe an array of references if more than one object of that class exists.
I imagine something equivalent code could be written. I'm just hoping to avoid reinventing the wheel.