package com.messagebird.objects;

/**
 * Represents a listing of Contact objects, along with pagination details.
 */
public class ContactList extends MessageListBase<Contact> {

    //
}

package com.messagebird.objects;

/**
 * Represents a listing of Contact objects, along with pagination details.
 */
public class ContactList extends ListBase<Contact> {

    //
}

Make ContactList extend ListBase