{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"//"}]}
    // `mentioned_items`. Mentioned items processing will then notice that they have already been
    // Naively, in "used" collection mode, all functions get added to *both* `used_items` and
    // visited, but at that point each mentioned item has been monomorphized, added to the