// RuleEnv returns the appropriate environment from the EnvSet for the given CEL rule.
	RuleEnv(envSet *environment.EnvSet, expression string) *cel.Env
	// MessageExpressionEnv returns the appropriate environment from the EnvSet for the given
	// CEL messageExpressions.
	MessageExpressionEnv(envSet *environment.EnvSet, expression string) *cel.Env
}

// NewExpressionsEnvLoader creates an EnvLoader that always uses the NewExpressions environment type.

	if pe.rules.Has(expression) {
		return envSet.StoredExpressionsEnv()
	}
	return envSet.NewExpressionsEnv()
}

func (pe preexistingExpressions) MessageExpressionEnv(envSet *environment.EnvSet, expression string) *celgo.Env {
	if pe.messageExpressions.Has(expression) {
		return envSet.StoredExpressionsEnv()
	}
	return envSet.NewExpressionsEnv()
}