{"ast_node_type":"other","tokens":[{"end":58,"kind":"keyword","start":0,"text":"//"}]}
            // AdtDef are interned and compared by address
            [] fn_abi: rustc_target::callconv::FnAbi<'tcx, rustc_middle::ty::Ty<'tcx>>,
            [decode] adt_def: rustc_middle::ty::AdtDefData,