if !allowComposition {
		if strictCost {
			return strictStatelessCELCompiler
		} else {
			return nonStrictStatelessCELCompiler
		}
	}
	compiler, err := plugincel.NewCompositedCompiler(environment.MustBaseEnvSet(environment.DefaultCompatibilityVersion(), strictCost))
	if err != nil {
		// should never happen, but cannot panic either.
		utilruntime.HandleError(err)