{"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"PerNS"}]}
        PerNS { value_ns: f(self.value_ns), type_ns: f(self.type_ns), macro_ns: f(self.macro_ns) }
    pub fn map<U, F: FnMut(T) -> U>(self, mut f: F) -> PerNS<U> {
    }