How to map secondary ip to an existing interface on aws

I need to add secondary private IP address to an existing ENI that is already attached to an instance. We’ve done this multiple times using the AWS Console through the Manage IP Addresses from the available Actions for the ENI. I need to do the same thing but in terraform. I looked at the aws_network_interface resource configuration but I didn’t see an option for assigning to an existing ENI.

Can somebody help? Thanks.