{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"//"}]}
        // potentially skip it in opt-level 0 if we are sure that opt-level will never *remove* uses
        // If this pass is skipped the collector assume that nothing got mentioned! We could
        // of anything, but that still seems fragile. Furthermore, even debug builds use level 1, so