code: func (c *Cluster) KillContainer(opts docker.KillContainerOptions) error {
  	node, err := c.getNodeForContainer(opts.ID)
  	if err != nil {
  		return err
  	}
  	return wrapError(node, node.KillContainer(opts))
  }
docs: // KillContainer kills a container, returning an error in case of failure.