syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"(\"fp8fma\","}]}
source_snippet:     ("fp8fma", Unstable(sym::aarch64_unstable_target_feature), &["fp8"]),
context_before:     // FEAT_FP8FMA
context_after:     // FEAT_FP16