{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"//"}]}
            // variant, used for printing MIR. However this information should also be accessible
            // MIR includes an `Option<Symbol>` argument for `Downcast` that is the name of the
            // via a lookup using the `VariantIdx`. The `Option<Symbol>` argument is therefore