syntax_data: {"ast_node_type":"other","tokens":[{"end":52,"kind":"keyword","start":0,"text":"ty::Adt(def,"}]}
source_snippet:         ty::Adt(def, args) if def.repr().simd() => {
context_before:         // SIMD vector types.
context_after:             // Supported SIMD vectors are ADTs with a single array field: