The import org.broadleafcommerce.common.copy cannot be resolved?

[microacup]

org.broadleafcommerce.menu.domain.MenuItem

public interface MenuItem extends Serializable, MultiTenantCloneable<MenuItem> {

<properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <blc.version>3.2.0-SNAPSHOT</blc.version>
        <project.uri>${project.baseUri}</project.uri>
    </properties>

Can not find package org.broadleafcommerce.common.copy. Where is it?