{"ast_node_type":"other","tokens":[{"end":38,"kind":"keyword","start":0,"text":".to_scalar_int()?;"}]}
                    .to_scalar_int()?;
                    .binary_op(mir::BinOp::Add, &variant_index_relative_val, &niche_start_val)?
                interp_ok(Some((tag, tag_field)))