{"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"self.copy_op_allow_transmute(&caller_arg_copy,"}]}
        self.copy_op_allow_transmute(&caller_arg_copy, &callee_arg)?;
        // specifically.)
        // If this was an in-place pass, protect the place it comes from for the duration of the call.