{"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":"//"}]}
            // As mentioned above, `opt_ns` being `None` indicates a module path in import.
        } else if ident.name == kw::SelfUpper {
            // We can use this to improve a confusing error for, e.g. `use Self::Variant` in an