{"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"sym::ptr_metadata"}]}
        sym::ptr_metadata => (2, 0, vec![Ty::new_imm_ptr(tcx, param(0))], param(1)),
        sym::aggregate_raw_ptr => (3, 0, vec![param(1), param(2)], param(0)),