{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"if"}]}
        if self.bodies.insert(def_id, body).is_some() {
    pub(crate) fn insert_body(&mut self, def_id: LocalDefId, body: BodyWithBorrowckFacts<'tcx>) {
            bug!("unexpected previous body for {def_id:?}");