code: func (a *vppClient) Disconnect() error {
  	globalVppClient = nil
  
  	rc := C.govpp_disconnect()
  	if rc != 0 {
  		return fmt.Errorf("disconnecting from VPP binary API failed (rc=%v)", rc)
  	}
  
  	return nil
  }
docs: // Disconnect disconnects the process from VPP.