absl::flat_hash_map<int, absl::flat_hash_map<std::string, int>>
      tensor_index_map_;

  // Maps op name to index of the corresponding OperatorCode in opcodes_ vector.
  absl::flat_hash_map<std::string, uint32_t> opcode_index_map_;
  std::vector<BufferOffset<tflite::OperatorCode>> opcodes_;

  // Maps function name to index of the corresponding subgraph in the FlatBuffer
  // model.