code: func TaintExists(taints []v1.Taint, taintToFind *v1.Taint) bool {
  	for _, taint := range taints {
  		if taint.MatchTaint(taintToFind) {
  			return true
  		}
  	}
  	return false
  }
docs: // TaintExists checks if the given taint exists in list of taints. Returns true if exists false otherwise.