code: func (r *runtimeOCI) PauseContainer(c *Container) error {
  	c.opLock.Lock()
  	defer c.opLock.Unlock()
  
  	_, err := utils.ExecCmd(r.path, rootFlag, r.root, "pause", c.id)
  	return err
  }
docs: // PauseContainer pauses a container.