syntax_data: {"ast_node_type":"variable","tokens":[{"end":70,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                 let is_covering_range = |test_case: &TestCase<'tcx>| {
context_before:                 // not to add such values here.
context_after:                     test_case.as_range().is_some_and(|range| {