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What's special about the Shark UV Reveal?It's in the name: The Shark UV Reveal uses a UV light to detect stains on the floor that we wouldn't see with a casual glance down. That could be anything from those super-faint water stains on the bathroom floor, to sticky residue from a kitchen spill you thought you wiped up, to invisible droplets of dried pet pee. If there were ever a robot vacuum for Dexter Morgan, it would be this one.
shouldn’t have backward compatibility issues.
elements, or a 1-ary tuple containing T if it is not a union.