Is isVisible() the boolean inverse of isHidden()?

[Sicilian7 9]

The Widget API provides two methods for widgets, namely 

isVisible(),isHidden()

Are these just boolean inverses? Or do they refer to two different things entirely?

[Pandemic 2842]

They are not inverses of each other, isHidden is checking a field in the RS widget class, isVisible is comparing loop cycles

I think they'd always be the inverse, but there's a chance it could be different. isVisible is the preferred way to check, it should be a bit more performant.