type CompilationResult struct {
	Program cel.Program
	Error   *apiservercel.Error
	// If true, the compiled expression contains a reference to the identifier "oldSelf".
	UsesOldSelf bool
	// Represents the worst-case cost of the compiled expression in terms of CEL's cost units, as used by cel.EstimateCost.
	MaxCost uint64

		activationFactory := validationActivationWithoutOldSelf
		for _, rule := range compiledRules {
			if rule.UsesOldSelf {
				activationFactory = validationActivationWithOldSelf
				break
			}
		}

		return &Validator{
			compiledRules:        compiledRules,
			uncompiledRules:      validationSchema.XValidations,