001/*
002 * SPDX-License-Identifier: Apache-2.0
003 *
004 * Copyright 2024-2026 The Enola <https://enola.dev> Authors
005 *
006 * Licensed under the Apache License, Version 2.0 (the "License");
007 * you may not use this file except in compliance with the License.
008 * You may obtain a copy of the License at
009 *
010 *     https://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package dev.enola.model.enola;
019
020import dev.enola.data.iri.IRI;
021import dev.enola.thing.Link;
022import dev.enola.thing.Thing;
023
024import org.jspecify.annotations.Nullable;
025
026import java.util.Set;
027
028public interface HasChildren extends Thing {
029
030    // TODO Set<T> children()
031
032    default @Nullable Set<Link> childrenIRI() {
033        return get("https://enola.dev/children", Set.class);
034    }
035
036    interface Builder<B extends HasChildren> extends Thing.Builder<B> { // skipcq: JAVA-E0169
037        default HasChildren.Builder<B> addChildIRI(IRI childIRI) {
038            add("https://enola.dev/children", childIRI);
039            return this;
040        }
041    }
042}