{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"//"}]}
    // <https://llvm.org/docs/CoverageMappingFormat.html#llvm-ir-representation>
    // encoded mapping data in bytes. Note that the length field is 32 bits.
    // See also `src/llvm-project/clang/lib/CodeGen/CoverageMappingGen.cpp` and