syntax_data: {"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"(\"apxf\","}]}
source_snippet:     ("apxf", Unstable(sym::apx_target_feature), &[]),
context_before:     ("amx-transpose", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
context_after:     ("avx", Stable, &["sse4.2"]),