}
  fbb.EndVector(vector_start, /*typed=*/true, /*fixed=*/false);

  auto buckets = mlir::dyn_cast_or_null<IntegerAttr>(attrs.get("buckets"));
  fbb.Int("buckets", buckets.getInt());

  fbb.EndMap(start_map);
  fbb.Finish();
  custom_option_buffer.assign(fbb.GetBuffer().begin(), fbb.GetBuffer().end());
  return success();
}

LogicalResult ConvertSgnnProjection(func::FuncOp func, llvm::StringRef api,

  flexbuffers::Builder fbb;
  size_t start_map = fbb.StartMap();

  for (auto attr : attrs) {
    if (auto float_attr = mlir::dyn_cast_or_null<FloatAttr>(attr.second)) {
      fbb.Float(attr.first.data(), float_attr.getValue().convertToFloat());
    } else if (auto int_attr =
                   mlir::dyn_cast_or_null<IntegerAttr>(attr.second)) {
      fbb.Int(attr.first.data(), int_attr.getInt());

    Operation *mlir_op, uint32_t opcode_index,
    const std::vector<int32_t> &operands, const std::vector<int32_t> &results,
    const std::vector<int32_t> &intermediates,
    flatbuffers::FlatBufferBuilder *fbb);

// Populates the array of mlir::NamedAttributes corresponding to the given
// tflite::FlatbufferOptionsUnion.
// We use an out parameter per LLVM convention
void BuiltinOptionsToAttributes(