{"ast_node_type":"variable","tokens":[{"end":21,"kind":"keyword","start":0,"text":"let"}]}
    let update_test =
    let file_range = impl_syntax.original_file_range_with_macro_call_body(sema.db);
        UpdateTest::find_snapshot_macro(sema, &impl_syntax.file_syntax(sema.db), file_range);