syntax_data: {"ast_node_type":"other","tokens":[{"end":45,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// reference implementation does things.
context_before:     /// don't know whether more input is coming. This is different from how the
context_after:     cv_stack: [u8; (LLVM_BLAKE3_MAX_DEPTH + 1) * LLVM_BLAKE3_OUT_LEN],