public java.util.List<String> getIamUserArns() {
        if (iamUserArns == null) {
            iamUserArns = new com.amazonaws.internal.SdkInternalList<String>();
        }
        return iamUserArns;
    }
<p>
An array of IAM or federated user ARNs that identify the users to be described.
</p>

@return An array of IAM or federated user ARNs that identify the users to be described.
aws-java-sdk-opsworks/src/main/java/com/amazonaws/services/opsworks/model/DescribeUserProfilesRequest.java