Azurerm_function_app_function resource not supported in v2.99.0 of azurerm

The docs for version 2.99.0 of the azurerm provider say that azurerm_function_app_function is a valid resource. When you look at the release notes, they say that resource is in beta for this release. Either way, when I try to apply my file with that resource, it says:

The provider hashicorp/azurerm does not support resource type “azurerm_function_app_function”.

Do I need to do something special to access the beta resources?

This was addressed in the 3.0 release, so it’s not an issue for me anymore.