{"ast_node_type":"variable","tokens":[{"end":84,"kind":"keyword","start":0,"text":"let"}]}
        let (db, file_id, range_or_offset) = Self::with_range_or_offset(ra_fixture);
    fn with_range(#[rust_analyzer::rust_fixture] ra_fixture: &str) -> (Self, FileRange) {
        let range = range_or_offset.expect_range();