{"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"layout.fields.offset(field_types.iter().count()"}]}
                    layout.fields.offset(field_types.iter().count() - 1).bytes_usize();
                let sized_part_size =
                let sized_part_align = layout.align.abi.bytes() as usize;