Terraforming Azure alert rules using action groups for notifications

When creating an azurerm_monitor_metric_alertrule, I would like for the alert to utilize an azurerm_monitor_action_group that defines email/SMS recipients.

This is easy enough to do in the Azure portal, but when Terraforming my alert rules, I only see the email_action and webhook_action options defined on azurerm_monitor_metric_alertrule.

Is there a way to use an action group when Terraforming Azure alert rules that I’m missing, or is it just not supported currently? Thanks in advance for any help!