syntax_data: {"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if !tcx.sess.instrument_coverage() || !tcx.is_eligible_for_coverage(def_id) {
context_before:     pub(crate) fn new_if_enabled(tcx: TyCtxt<'_>, def_id: LocalDefId) -> Option<Self> {
context_after:             return None;