code: func (c *engineIPC) VLANs() (*seesaw.VLANs, error) {
  	var v seesaw.VLANs
  	if err := c.client.Call("SeesawEngine.VLANs", c.ctx, &v); err != nil {
  		return nil, err
  	}
  	return &v, nil
  }
docs: // VLANs requests a list of VLANs configured on the cluster.