{"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"self.add_definition_to_binding(break_binding,"}]}
        self.add_definition_to_binding(break_binding, break_bpat);
        let break_bpat = self.alloc_pat_desugared(Pat::Bind { id: break_binding, subpat: None });
        let break_arm = MatchArm {