code: func (n *NvidiaGPUManager) Initialize() error {
  	if GPUInfoFileExists() {
  		// GPU info file found
  		gpuJSON, err := GetGPUInfoJSON()
  		if err != nil {
  			return errors.Wrapf(err, "could not read GPU file content")
  		}
  		var nvidiaGPUInfo NvidiaGPUManager
  		err = json.Unmarshal(gpuJSON, &nvidiaGPUInfo)
  		if err != nil {
  			return errors.Wrapf(err, "could not unmarshal GPU file content")
  		}
  		n.SetDriverVersion(nvidiaGPUInfo.GetDriverVersion())
  		nvidiaGPUInfo.lock.RLock()
  		gpuIDs := nvidiaGPUInfo.GetGPUIDsUnsafe()
  		nvidiaGPUInfo.lock.RUnlock()
  		n.SetGPUIDs(gpuIDs)
  		n.SetDevices()
  	} else {
  		seelog.Error("Config for GPU support is enabled, but GPU information is not found; continuing without it")
  	}
  	return nil
  }
docs: // Initialize sets the fields of Nvidia GPU Manager struct