{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"//"}]}
        // constants and generic expressions are not yet handled correctly.
        // FIXME(generic_const_exprs): Occurs check failures for unevaluated
        let Generalization { value_may_be_infer: generalized_ct, has_unconstrained_ty_var } = self