public ModifyUserGroupResult withUserIds(java.util.Collection<String> userIds) {
        setUserIds(userIds);
        return this;
    }
<p>
The list of user IDs that belong to the user group.
</p>

@param userIds
       The list of user IDs that belong to the user group.
@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/ModifyUserGroupResult.java