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package org.apache.maven.model.locator;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.io.File;

/**
 * Locates a POM file within a project base directory.
 *
 * @author Benjamin Bentmann
 */
public interface ModelLocator
{

    /**
     * Locates the POM file within the specified project directory. In case the given project directory does not exist
     * or does not contain a POM file, the return value indicates the expected path to the POM file. Sub directories of
     * the project directory will not be considered when locating the POM file. The return value will be an absolute
     * path if the project directory is given as an absolute path.
     *
     * @param projectDirectory The (possibly non-existent) base directory to locate the POM file in, must not be {@code
     *            null}.
     * @return The path to the (possibly non-existent) POM file, never {@code null}.
     */
    File locatePom( File projectDirectory );

}