syntax_data: {"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"avx512f:"}]}
source_snippet:                 avx512f: I32, I64, F16, F32, F64, F128,
context_before:             Self::zmm_reg => types! {
context_after:                     VecI8(16), VecI16(8), VecI32(4), VecI64(2), VecF16(8), VecF32(4), VecF64(2),