{"ast_node_type":"impl","tokens":[{"end":57,"kind":"keyword","start":0,"text":"mcdc_degraded_branches:"}]}
    mcdc_degraded_branches: &mut impl Extend<MCDCBranch>,
    mcdc_bitmap_bits: &mut usize,
    mcdc_mappings: &mut impl Extend<(MCDCDecision, Vec<MCDCBranch>)>,