{"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"[FieldIdx::from_usize(field_index)];"}]}
                        [FieldIdx::from_usize(field_index)];
                    let coroutine_saved_local = coroutine_layout.variant_fields[variant_index]
                    let field_name_maybe = coroutine_layout.field_names[coroutine_saved_local];