code: func (n *IcsNode) GetOneParam() (string, string) {
  	if n.ParamsLen() == 0 {
  		return "", ""
  	}
  	var key, val string
  	for k, v := range n.Params {
  		key, val = k, v
  		break
  	}
  	return key, val
  }
docs: // GetOneParam resturns the first param found
  // usefull when you know that there is a only
  // one param token