{"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"//"}]}
    // You have to manually visit `ty::Const` and `mir::Const` through the
    // the variants `Literal`, `NonHirLiteral` and `NamedConst` in `thir::ExprKind`).
    // other `visit*` functions.