syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":")"}]}
source_snippet:     ) -> (Vec<(MCDCDecisionSpan, Vec<MCDCBranchSpan>)>, Vec<MCDCBranchSpan>) {
context_before:         self,
context_after:         (self.mcdc_spans, self.degraded_spans)