{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"ExternAbi::System"}]}
            ExternAbi::System { unwind } => Abi::System { unwind },
            ExternAbi::CmseNonSecureEntry => Abi::CCmseNonSecureEntry,
            ExternAbi::RustCall => Abi::RustCall,