signatures.begin(), signatures.end());

  // Init op is only used during initialization and it's not a target for
  // quantization.
  signature_def_map.erase(kSavedModelInitOpSignatureKey);
  return signature_def_map;
}

// Retrieves the function name -> function alias mapping from the
// `SavedModelBundle`.
// TODO: b/314124142 - Remove the need for this function.