{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"//"}]}
                        // https://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling-compression).
                        // https://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling-builtin and
                        let builtin_types = [