syntax_data: {"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"coverage_info.visit_unary_not(this.thir,"}]}
source_snippet:                     coverage_info.visit_unary_not(this.thir, expr_id);
context_before:                 if let Some(coverage_info) = this.coverage_info.as_mut() {
context_after:                 }