public UserGroupPendingChanges withUserIdsToAdd(java.util.Collection<String> userIdsToAdd) {
        setUserIdsToAdd(userIdsToAdd);
        return this;
    }
<p>
The list of user IDs to add.
</p>

@param userIdsToAdd
       The list of user IDs to add.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-elasticache/src/main/java/com/amazonaws/services/elasticache/model/UserGroupPendingChanges.java