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/* *********************************************************************
 * This Source Code Form is copyright of 51Degrees Mobile Experts Limited. 
 * Copyright © 2017 51Degrees Mobile Experts Limited, 5 Charlotte Close,
 * Caversham, Reading, Berkshire, United Kingdom RG4 7BY
 * 
 * This Source Code Form is the subject of the following patents and patent
 * applications, owned by 51Degrees Mobile Experts Limited of 5 Charlotte
 * Close, Caversham, Reading, Berkshire, United Kingdom RG4 7BY: 
 * European Patent No. 2871816;
 * European Patent Application No. 17184134.9;
 * United States Patent Nos. 9,332,086 and 9,350,823; and
 * United States Patent Application No. 15/686,066.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0.
 * 
 * If a copy of the MPL was not distributed with this file, You can obtain
 * one at http://mozilla.org/MPL/2.0/.
 * 
 * This Source Code Form is "Incompatible With Secondary Licenses", as
 * defined by the Mozilla Public License, v. 2.0.
 * ********************************************************************* */
package fiftyone.mobile.detection.cache;

import java.io.IOException;

/**
 * Interface provides methods to load a value for a key
 * 
 * This method should not be called as it is part of the internal logic.
 * 
 * @param  Type of key
 * @param  Type of value
 */
public interface IValueLoader {
    /**
     * Returns the value associated with the key.
     * 
     * @param key for the value required
     * @return Value associated with the key
     * @throws java.io.IOException if there was an IOException in the course of loading.
     */
    V load(K key) throws IOException;
}