{"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"bb_to_bcb:"}]}
    bb_to_bcb: IndexVec<BasicBlock, Option<BasicCoverageBlock>>,
    bcbs: IndexVec<BasicCoverageBlock, BasicCoverageBlockData>,
    pub(crate) successors: IndexVec<BasicCoverageBlock, Vec<BasicCoverageBlock>>,