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/* Copyright (C) 2013-2014 TU Dortmund
 * This file is part of LearnLib, http://www.learnlib.de/.
 * 
 * LearnLib is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License version 3.0 as published by the Free Software Foundation.
 * 
 * LearnLib is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with LearnLib; if not, see
 * http://www.gnu.de/documents/lgpl.en.html.
 */
package de.learnlib.api;

import javax.annotation.Nullable;
import javax.annotation.ParametersAreNonnullByDefault;

import net.automatalib.words.Word;

@ParametersAreNonnullByDefault
public interface QueryAnswerer {
	@Nullable
	public D answerQuery(Word prefix, Word suffix);
}