{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":".map_or(body_succ,"}]}
                        .map_or(body_succ, |g| self.propagate_through_expr(g, body_succ));
                        .as_ref()
                    let arm_succ = self.define_bindings_in_pat(&arm.pat, guard_succ);