syntax_data: {"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":"Self::VecF64(n)"}]}
source_snippet:             Self::VecF64(n) => n * 8,
context_before:             Self::VecF32(n) => n * 4,
context_after:             Self::VecF128(n) => n * 16,