{"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"//"}]}
        // to infinite, this correctly only detects ranges that contain exactly one `Finite(x)`.
        // Since `lo` and `hi` can't be the same `Infinity` and `plus_one` never changes from finite
        self.lo.plus_one() == Some(self.hi)