{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"self.linkage.set(FunctionType::Extern);"}]}
                self.linkage.set(FunctionType::Extern);
                let fn_abi = self.fn_abi_of_instance(instance, ty::List::empty());
                self.declare_fn(symbol_name, fn_abi)