{"ast_node_type":"other","tokens":[{"end":32,"kind":"keyword","start":0,"text":"self.per_ns(|this,"}]}
        self.per_ns(|this, ns| {
        let mut redundant_span = PerNS { value_ns: None, type_ns: None, macro_ns: None };
            let binding = bindings[ns].get().binding().map(|b| b.import_source());