{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"LayoutData,"}]}
    LayoutData, Niche, NonZeroUsize, Primitive, ReprOptions, Scalar, Size, StructKind, TagEncoding,
    AbiAlign, Align, BackendRepr, FieldsShape, HasDataLayout, IndexSlice, IndexVec, Integer,
    Variants, WrappingRange,