{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"//"}]}
    // count. For example, if we removed `_2 = discriminant(_1)`, then we'll subtract one from
    // `Locals`, we're also going to subtract any uses of other `Locals` from the `used_locals`
    // `use_counts[_1]`. That in turn might make `_1` unused, so we loop until we hit a