in src/vector_of_kll.cpp [506:518]
nb::list vector_of_kll_sketches<T, C>::serialize(ArrInputType<int>& isk) {
Array1D<int> indices = input_to_vec<int>(isk);
Array1D<uint32_t> inds = get_indices(indices);
const size_t num_sketches = inds.size();
nb::list list;
for (uint32_t i = 0; i < num_sketches; ++i) {
auto serResult = sketches_[inds(i)].serialize();
list.append(nb::bytes((char*)serResult.data(), serResult.size()));
}
return list;
}