associating IAM role with AWS redshift cluster in ansible

I would like to attach IAM roles to a redshift cluster in my ansible playbook but don’t see any parameter for IAM roles in the redshift module (https://docs.ansible.com/ansible/latest/modules/redshift_module.html). Such options do exist in the boto3 library (https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/redshift.html#Redshift.Client.create_cluster) and the awscli (https://docs.aws.amazon.com/cli/latest/reference/redshift/create-cluster.html). Any suggestions of what to do?

Thanks.

-Raymond Yee