in plasma-store/src/ffi/ffi.cc [15:19]
std::unique_ptr<ObjectID> oid_from_binary(rust::Slice<const uint8_t> binary) {
std::string bin_str = std::string(reinterpret_cast<const char*>(binary.data()), binary.size());
ObjectID oid = plasma::ObjectID::from_binary(bin_str);
return std::make_unique<ObjectID>(oid);
}