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There is a newer version: 14.0.4

/*
 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.yangtools.transform;

import static java.util.Objects.requireNonNull;

import java.util.Map;
import java.util.function.Function;
import org.opendaylight.yangtools.yang.common.QName;

class QNameReplacementFunction implements Function {
    private final Map mapping;

    QNameReplacementFunction(final Map mapping) {
        this.mapping = requireNonNull(mapping);
    }

    @Override
    public QName apply(final QName input) {
        QName potential = mapping.get(input);
        return potential != null ? potential : input;
    }
}