{"ast_node_type":"function","tokens":[{"end":71,"kind":"keyword","start":0,"text":"fn"}]}
fn calc_test_vectors_index(conditions: &mut Vec<MCDCBranch>) -> usize {
// This function is mostly like [`TVIdxBuilder::TvIdxBuilder`](https://github.com/llvm/llvm-project/blob/d594d9f7f4dc6eb748b3261917db689fdc348b96/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp#L226)
    let mut indegree_stats = IndexVec::<ConditionId, usize>::from_elem_n(0, conditions.len());