// Builds TFLite tensor from the given value. `buffer_idx` is index of the
  // corresponding buffer. Emits error and returns std::nullopt on failure.
  std::optional<BufferOffset<tflite::Tensor>> BuildTensor(
      Value value, const std::string& name, unsigned buffer_idx,
      const std::optional<BufferOffset<tflite::QuantizationParameters>>&
          quant_parameters);