2 * Copyright (c) 2018 Pantheon Technologies, s.r.o. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.yangtools.yang.model.api.stmt;
10 import com.google.common.annotations.Beta;
11 import java.util.Optional;
12 import org.eclipse.jdt.annotation.NonNull;
13 import org.opendaylight.yangtools.yang.common.QName;
14 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
17 * Marker interface for statements which may contain a 'default' statement, as defined in RFC7950.
20 public interface DefaultStatementAwareDeclaredStatement extends DeclaredStatement<QName> {
22 * Return a {@link DefaultStatement} child, if present.
24 * @return A {@link DefaultStatement}, or empty if none is present.
26 default @NonNull Optional<DefaultStatement> getDefault() {
27 return findFirstDeclaredSubstatement(DefaultStatement.class);