let arguments = (ins
    TF_StrTensor:$serialized,
    TF_StrTensor:$names,
    Variadic<TF_StrTensor>:$sparse_keys,
    Variadic<TF_StrTensor>:$dense_keys,
    Variadic<TensorOf<[TF_Float32, TF_Int64, TF_Str]>>:$dense_defaults,

    TF_ShapeAttrArray:$dense_shapes
  );

  let results = (outs
    Variadic<TF_Int64Tensor>:$sparse_indices,                           // len(sparse_types)