public void setUserNamesToRemove(java.util.Collection<String> userNamesToRemove) {
        if (userNamesToRemove == null) {
            this.userNamesToRemove = null;
            return;
        }

        this.userNamesToRemove = new java.util.ArrayList<String>(userNamesToRemove);
    }
<p>
A list of user names being removed from the ACL
</p>

@param userNamesToRemove
       A list of user names being removed from the ACL
aws-java-sdk-memorydb/src/main/java/com/amazonaws/services/memorydb/model/ACLPendingChanges.java